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Merge branch 'for-linus' into for-next
[linux-2.6-block.git] / sound / usb / mixer.c
CommitLineData
1a59d1b8 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4
LT		 2/*
3 * (Tentative) USB Audio Driver for ALSA
4 *
5 * Mixer control part
6 *
7 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
8 *
9 * Many codes borrowed from audio.c by
10 * Alan Cox (alan@lxorguk.ukuu.org.uk)
11 * Thomas Sailer (sailer@ife.ee.ethz.ch)
1da177e4
LT		 12 */
13
157a57b6
DM		 14/*
15 * TODOs, for both the mixer and the streaming interfaces:
16 *
17 * - support for UAC2 effect units
18 * - support for graphical equalizers
19 * - RANGE and MEM set commands (UAC2)
20 * - RANGE and MEM interrupt dispatchers (UAC2)
21 * - audio channel clustering (UAC2)
22 * - audio sample rate converter units (UAC2)
23 * - proper handling of clock multipliers (UAC2)
24 * - dispatch clock change notifications (UAC2)
25 * - stop PCM streams which use a clock that became invalid
26 * - stop PCM streams which use a clock selector that has changed
27 * - parse available sample rates again when clock sources changed
28 */
29
1da177e4
LT		 30#include <linux/bitops.h>
31#include <linux/init.h>
32#include <linux/list.h>
cddaafb9 33#include <linux/log2.h>
1da177e4
LT		 34#include <linux/slab.h>
35#include <linux/string.h>
36#include <linux/usb.h>
28e1b773 37#include <linux/usb/audio.h>
23caaf19 38#include <linux/usb/audio-v2.h>
9a2fe9b8 39#include <linux/usb/audio-v3.h>
28e1b773 40
1da177e4
LT		 41#include <sound/core.h>
42#include <sound/control.h>
b259b10c 43#include <sound/hwdep.h>
aafad562 44#include <sound/info.h>
7bc5ba7e 45#include <sound/tlv.h>
1da177e4
LT		 46
47#include "usbaudio.h"
f0b5e634 48#include "mixer.h"
e5779998 49#include "helper.h"
7b1eda22 50#include "mixer_quirks.h"
88a8516a 51#include "power.h"
4d1a70da 52
ebfdeea3
JK		 53#define MAX_ID_ELEMS 256
54
1da177e4
LT		 55struct usb_audio_term {
56 int id;
57 int type;
58 int channels;
59 unsigned int chconfig;
60 int name;
61};
62
63struct usbmix_name_map;
64
86e07d34
TI		 65struct mixer_build {
66 struct snd_usb_audio *chip;
84957a8a 67 struct usb_mixer_interface *mixer;
1da177e4
LT		 68 unsigned char *buffer;
69 unsigned int buflen;
291186e0 70 DECLARE_BITMAP(unitbitmap, MAX_ID_ELEMS);
19bce474 71 DECLARE_BITMAP(termbitmap, MAX_ID_ELEMS);
86e07d34 72 struct usb_audio_term oterm;
1da177e4 73 const struct usbmix_name_map *map;
8e062ec7 74 const struct usbmix_selector_map *selector_map;
1da177e4
LT		 75};
76
1cdfa9f3 77/*E-mu 0202/0404/0204 eXtension Unit(XU) control*/
7d2b451e
SK		 78enum {
79 USB_XU_CLOCK_RATE = 0xe301,
80 USB_XU_CLOCK_SOURCE = 0xe302,
81 USB_XU_DIGITAL_IO_STATUS = 0xe303,
82 USB_XU_DEVICE_OPTIONS = 0xe304,
83 USB_XU_DIRECT_MONITORING = 0xe305,
84 USB_XU_METERING = 0xe306
85};
86enum {
87 USB_XU_CLOCK_SOURCE_SELECTOR = 0x02, /* clock source*/
88 USB_XU_CLOCK_RATE_SELECTOR = 0x03, /* clock rate */
89 USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01, /* the spdif format */
90 USB_XU_SOFT_LIMIT_SELECTOR = 0x03 /* soft limiter */
91};
1da177e4
LT		 92
93/*
94 * manual mapping of mixer names
95 * if the mixer topology is too complicated and the parsed names are
96 * ambiguous, add the entries in usbmixer_maps.c.
97 */
f0b5e634 98#include "mixer_maps.c"
1da177e4 99
c3a3e040 100static const struct usbmix_name_map *
17156f23 101find_map(const struct usbmix_name_map *p, int unitid, int control)
1da177e4 102{
c3a3e040
JK		 103 if (!p)
104 return NULL;
1da177e4 105
17156f23 106 for (; p->id; p++) {
c3a3e040
JK		 107 if (p->id == unitid &&
108 (!control || !p->control || control == p->control))
109 return p;
1da177e4 110 }
c3a3e040 111 return NULL;
1da177e4
LT		 112}
113
c3a3e040
JK		 114/* get the mapped name if the unit matches */
115static int
116check_mapped_name(const struct usbmix_name_map *p, char *buf, int buflen)
1da177e4 117{
e8afdfdc
TI		 118 int len;
119
c3a3e040
JK		 120 if (!p || !p->name)
121 return 0;
1da177e4 122
c3a3e040 123 buflen--;
e8afdfdc
TI		 124 len = strscpy(buf, p->name, buflen);
125 return len < 0 ? buflen : len;
c3a3e040
JK		 126}
127
5aeee342
TI		 128/* ignore the error value if ignore_ctl_error flag is set */
129#define filter_error(cval, err) \
3360b84b 130 ((cval)->head.mixer->ignore_ctl_error ? 0 : (err))
5aeee342 131
c3a3e040
JK		 132/* check whether the control should be ignored */
133static inline int
134check_ignored_ctl(const struct usbmix_name_map *p)
135{
136 if (!p || p->name || p->dB)
1da177e4 137 return 0;
c3a3e040
JK		 138 return 1;
139}
140
141/* dB mapping */
142static inline void check_mapped_dB(const struct usbmix_name_map *p,
143 struct usb_mixer_elem_info *cval)
144{
145 if (p && p->dB) {
146 cval->dBmin = p->dB->min;
147 cval->dBmax = p->dB->max;
38b65190 148 cval->initialized = 1;
1da177e4 149 }
1da177e4
LT		 150}
151
8e062ec7 152/* get the mapped selector source name */
86e07d34 153static int check_mapped_selector_name(struct mixer_build *state, int unitid,
8e062ec7
CL		 154 int index, char *buf, int buflen)
155{
156 const struct usbmix_selector_map *p;
e8afdfdc 157 int len;
8e062ec7 158
6bc170e4 159 if (!state->selector_map)
8e062ec7
CL		 160 return 0;
161 for (p = state->selector_map; p->id; p++) {
e8afdfdc
TI		 162 if (p->id == unitid && index < p->count) {
163 len = strscpy(buf, p->names[index], buflen);
164 return len < 0 ? buflen : len;
165 }
8e062ec7
CL		 166 }
167 return 0;
168}
169
1da177e4
LT		 170/*
171 * find an audio control unit with the given unit id
172 */
6bc170e4
DM		 173static void *find_audio_control_unit(struct mixer_build *state,
174 unsigned char unit)
1da177e4 175{
67e1daa0
DM		 176 /* we just parse the header */
177 struct uac_feature_unit_descriptor *hdr = NULL;
178
179 while ((hdr = snd_usb_find_desc(state->buffer, state->buflen, hdr,
180 USB_DT_CS_INTERFACE)) != NULL) {
181 if (hdr->bLength >= 4 &&
182 hdr->bDescriptorSubtype >= UAC_INPUT_TERMINAL &&
9a2fe9b8 183 hdr->bDescriptorSubtype <= UAC3_SAMPLE_RATE_CONVERTER &&
67e1daa0
DM		 184 hdr->bUnitID == unit)
185 return hdr;
1da177e4 186 }
67e1daa0 187
1da177e4
LT		 188 return NULL;
189}
190
1da177e4
LT		 191/*
192 * copy a string with the given id
193 */
eccfc1b8 194static int snd_usb_copy_string_desc(struct snd_usb_audio *chip,
6bc170e4 195 int index, char *buf, int maxlen)
1da177e4 196{
eccfc1b8 197 int len = usb_string(chip->dev, index, buf, maxlen - 1);
251552a2
JK		 198
199 if (len < 0)
200 return 0;
201
1da177e4
LT		 202 buf[len] = 0;
203 return len;
204}
205
206/*
207 * convert from the byte/word on usb descriptor to the zero-based integer
208 */
86e07d34 209static int convert_signed_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 210{
211 switch (cval->val_type) {
212 case USB_MIXER_BOOLEAN:
213 return !!val;
214 case USB_MIXER_INV_BOOLEAN:
215 return !val;
216 case USB_MIXER_U8:
217 val &= 0xff;
218 break;
219 case USB_MIXER_S8:
220 val &= 0xff;
221 if (val >= 0x80)
222 val -= 0x100;
223 break;
224 case USB_MIXER_U16:
225 val &= 0xffff;
226 break;
227 case USB_MIXER_S16:
228 val &= 0xffff;
229 if (val >= 0x8000)
230 val -= 0x10000;
231 break;
232 }
233 return val;
234}
235
236/*
237 * convert from the zero-based int to the byte/word for usb descriptor
238 */
86e07d34 239static int convert_bytes_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 240{
241 switch (cval->val_type) {
242 case USB_MIXER_BOOLEAN:
243 return !!val;
244 case USB_MIXER_INV_BOOLEAN:
245 return !val;
246 case USB_MIXER_S8:
247 case USB_MIXER_U8:
248 return val & 0xff;
249 case USB_MIXER_S16:
250 case USB_MIXER_U16:
251 return val & 0xffff;
252 }
253 return 0; /* not reached */
254}
255
86e07d34 256static int get_relative_value(struct usb_mixer_elem_info *cval, int val)
1da177e4 257{
6bc170e4 258 if (!cval->res)
1da177e4
LT		 259 cval->res = 1;
260 if (val < cval->min)
261 return 0;
14790f1c 262 else if (val >= cval->max)
e4d8aef2 263 return DIV_ROUND_UP(cval->max - cval->min, cval->res);
1da177e4
LT		 264 else
265 return (val - cval->min) / cval->res;
266}
267
86e07d34 268static int get_abs_value(struct usb_mixer_elem_info *cval, int val)
1da177e4
LT		 269{
270 if (val < 0)
271 return cval->min;
6bc170e4 272 if (!cval->res)
1da177e4
LT		 273 cval->res = 1;
274 val *= cval->res;
275 val += cval->min;
276 if (val > cval->max)
277 return cval->max;
278 return val;
279}
280
bc18e31c
JS		 281static int uac2_ctl_value_size(int val_type)
282{
283 switch (val_type) {
284 case USB_MIXER_S32:
285 case USB_MIXER_U32:
286 return 4;
287 case USB_MIXER_S16:
288 case USB_MIXER_U16:
289 return 2;
290 default:
291 return 1;
292 }
293 return 0; /* unreachable */
294}
295
1da177e4
LT		 296
297/*
298 * retrieve a mixer value
299 */
300
0aef31b7
CW		 301static inline int mixer_ctrl_intf(struct usb_mixer_interface *mixer)
302{
303 return get_iface_desc(mixer->hostif)->bInterfaceNumber;
304}
305
6bc170e4
DM		 306static int get_ctl_value_v1(struct usb_mixer_elem_info *cval, int request,
307 int validx, int *value_ret)
1da177e4 308{
3360b84b 309 struct snd_usb_audio *chip = cval->head.mixer->chip;
1da177e4
LT		 310 unsigned char buf[2];
311 int val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
312 int timeout = 10;
978520b7 313 int idx = 0, err;
1da177e4 314
47ab1545 315 err = snd_usb_lock_shutdown(chip);
88a8516a
ON		 316 if (err < 0)
317 return -EIO;
6bc170e4 318
1da177e4 319 while (timeout-- > 0) {
0aef31b7 320 idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8);
5a9a8eca
SB		 321 err = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), request,
322 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
323 validx, idx, buf, val_len);
324 if (err >= val_len) {
1da177e4 325 *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
978520b7
TI		 326 err = 0;
327 goto out;
5a9a8eca
SB		 328 } else if (err == -ETIMEDOUT) {
329 goto out;
1da177e4
LT		 330 }
331 }
0ba41d91
TI		 332 usb_audio_dbg(chip,
333 "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
334 request, validx, idx, cval->val_type);
978520b7
TI		 335 err = -EINVAL;
336
337 out:
47ab1545 338 snd_usb_unlock_shutdown(chip);
978520b7 339 return err;
1da177e4
LT		 340}
341
6bc170e4
DM		 342static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
343 int validx, int *value_ret)
23caaf19 344{
3360b84b 345 struct snd_usb_audio *chip = cval->head.mixer->chip;
447cae58
KM		 346 /* enough space for one range */
347 unsigned char buf[sizeof(__u16) + 3 * sizeof(__u32)];
23caaf19 348 unsigned char *val;
447cae58 349 int idx = 0, ret, val_size, size;
23caaf19
DM		 350 __u8 bRequest;
351
447cae58
KM		 352 val_size = uac2_ctl_value_size(cval->val_type);
353
e8bdb6bb
DM		 354 if (request == UAC_GET_CUR) {
355 bRequest = UAC2_CS_CUR;
447cae58 356 size = val_size;
e8bdb6bb
DM		 357 } else {
358 bRequest = UAC2_CS_RANGE;
447cae58 359 size = sizeof(__u16) + 3 * val_size;
e8bdb6bb
DM		 360 }
361
362 memset(buf, 0, sizeof(buf));
23caaf19 363
47ab1545 364 ret = snd_usb_lock_shutdown(chip) ? -EIO : 0;
88a8516a
ON		 365 if (ret)
366 goto error;
367
0aef31b7 368 idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8);
47ab1545 369 ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
23caaf19 370 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
978520b7 371 validx, idx, buf, size);
47ab1545 372 snd_usb_unlock_shutdown(chip);
23caaf19
DM		 373
374 if (ret < 0) {
88a8516a 375error:
0ba41d91
TI		 376 usb_audio_err(chip,
377 "cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
378 request, validx, idx, cval->val_type);
23caaf19
DM		 379 return ret;
380 }
381
e8bdb6bb
DM		 382 /* FIXME: how should we handle multiple triplets here? */
383
23caaf19
DM		 384 switch (request) {
385 case UAC_GET_CUR:
386 val = buf;
387 break;
388 case UAC_GET_MIN:
389 val = buf + sizeof(__u16);
390 break;
391 case UAC_GET_MAX:
447cae58 392 val = buf + sizeof(__u16) + val_size;
23caaf19
DM		 393 break;
394 case UAC_GET_RES:
447cae58 395 val = buf + sizeof(__u16) + val_size * 2;
23caaf19
DM		 396 break;
397 default:
398 return -EINVAL;
399 }
400
447cae58
KM		 401 *value_ret = convert_signed_value(cval,
402 snd_usb_combine_bytes(val, val_size));
23caaf19
DM		 403
404 return 0;
405}
406
6bc170e4
DM		 407static int get_ctl_value(struct usb_mixer_elem_info *cval, int request,
408 int validx, int *value_ret)
23caaf19 409{
9f814105
EZ		 410 validx += cval->idx_off;
411
3360b84b 412 return (cval->head.mixer->protocol == UAC_VERSION_1) ?
23caaf19
DM		 413 get_ctl_value_v1(cval, request, validx, value_ret) :
414 get_ctl_value_v2(cval, request, validx, value_ret);
415}
416
6bc170e4
DM		 417static int get_cur_ctl_value(struct usb_mixer_elem_info *cval,
418 int validx, int *value)
1da177e4 419{
de48c7bc 420 return get_ctl_value(cval, UAC_GET_CUR, validx, value);
1da177e4
LT		 421}
422
423/* channel = 0: master, 1 = first channel */
641b4879
TI		 424static inline int get_cur_mix_raw(struct usb_mixer_elem_info *cval,
425 int channel, int *value)
1da177e4 426{
6bc170e4
DM		 427 return get_ctl_value(cval, UAC_GET_CUR,
428 (cval->control << 8) | channel,
429 value);
1da177e4
LT		 430}
431
eef90451 432int snd_usb_get_cur_mix_value(struct usb_mixer_elem_info *cval,
641b4879
TI		 433 int channel, int index, int *value)
434{
435 int err;
436
437 if (cval->cached & (1 << channel)) {
438 *value = cval->cache_val[index];
439 return 0;
440 }
441 err = get_cur_mix_raw(cval, channel, value);
442 if (err < 0) {
3360b84b
TI		 443 if (!cval->head.mixer->ignore_ctl_error)
444 usb_audio_dbg(cval->head.mixer->chip,
0ba41d91 445 "cannot get current value for control %d ch %d: err = %d\n",
6bc170e4 446 cval->control, channel, err);
641b4879
TI		 447 return err;
448 }
449 cval->cached |= 1 << channel;
450 cval->cache_val[index] = *value;
451 return 0;
452}
453
1da177e4
LT		 454/*
455 * set a mixer value
456 */
457
7b1eda22
DM		 458int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval,
459 int request, int validx, int value_set)
1da177e4 460{
3360b84b 461 struct snd_usb_audio *chip = cval->head.mixer->chip;
bc18e31c 462 unsigned char buf[4];
978520b7 463 int idx = 0, val_len, err, timeout = 10;
23caaf19 464
9f814105
EZ		 465 validx += cval->idx_off;
466
9a2fe9b8 467
3360b84b 468 if (cval->head.mixer->protocol == UAC_VERSION_1) {
23caaf19 469 val_len = cval->val_type >= USB_MIXER_S16 ? 2 : 1;
9a2fe9b8 470 } else { /* UAC_VERSION_2/3 */
bc18e31c 471 val_len = uac2_ctl_value_size(cval->val_type);
23caaf19
DM		 472
473 /* FIXME */
474 if (request != UAC_SET_CUR) {
0ba41d91 475 usb_audio_dbg(chip, "RANGE setting not yet supported\n");
23caaf19
DM		 476 return -EINVAL;
477 }
478
479 request = UAC2_CS_CUR;
480 }
1da177e4
LT		 481
482 value_set = convert_bytes_value(cval, value_set);
483 buf[0] = value_set & 0xff;
484 buf[1] = (value_set >> 8) & 0xff;
bc18e31c
JS		 485 buf[2] = (value_set >> 16) & 0xff;
486 buf[3] = (value_set >> 24) & 0xff;
47ab1545
TI		 487
488 err = snd_usb_lock_shutdown(chip);
88a8516a
ON		 489 if (err < 0)
490 return -EIO;
47ab1545 491
978520b7 492 while (timeout-- > 0) {
0aef31b7 493 idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8);
5a9a8eca
SB		 494 err = snd_usb_ctl_msg(chip->dev,
495 usb_sndctrlpipe(chip->dev, 0), request,
496 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
497 validx, idx, buf, val_len);
498 if (err >= 0) {
978520b7
TI		 499 err = 0;
500 goto out;
5a9a8eca
SB		 501 } else if (err == -ETIMEDOUT) {
502 goto out;
88a8516a 503 }
978520b7 504 }
0ba41d91 505 usb_audio_dbg(chip, "cannot set ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d, data = %#x/%#x\n",
6bc170e4 506 request, validx, idx, cval->val_type, buf[0], buf[1]);
978520b7
TI		 507 err = -EINVAL;
508
509 out:
47ab1545 510 snd_usb_unlock_shutdown(chip);
978520b7 511 return err;
1da177e4
LT		 512}
513
6bc170e4
DM		 514static int set_cur_ctl_value(struct usb_mixer_elem_info *cval,
515 int validx, int value)
1da177e4 516{
7b1eda22 517 return snd_usb_mixer_set_ctl_value(cval, UAC_SET_CUR, validx, value);
1da177e4
LT		 518}
519
eef90451 520int snd_usb_set_cur_mix_value(struct usb_mixer_elem_info *cval, int channel,
641b4879 521 int index, int value)
1da177e4 522{
641b4879 523 int err;
a6a33259
DM		 524 unsigned int read_only = (channel == 0) ?
525 cval->master_readonly :
526 cval->ch_readonly & (1 << (channel - 1));
527
528 if (read_only) {
3360b84b 529 usb_audio_dbg(cval->head.mixer->chip,
0ba41d91 530 "%s(): channel %d of control %d is read_only\n",
a6a33259
DM		 531 __func__, channel, cval->control);
532 return 0;
533 }
534
6bc170e4
DM		 535 err = snd_usb_mixer_set_ctl_value(cval,
536 UAC_SET_CUR, (cval->control << 8) | channel,
537 value);
641b4879
TI		 538 if (err < 0)
539 return err;
540 cval->cached |= 1 << channel;
541 cval->cache_val[index] = value;
542 return 0;
1da177e4
LT		 543}
544
7bc5ba7e
TI		 545/*
546 * TLV callback for mixer volume controls
547 */
285de9c0 548int snd_usb_mixer_vol_tlv(struct snd_kcontrol *kcontrol, int op_flag,
7bc5ba7e
TI		 549 unsigned int size, unsigned int __user *_tlv)
550{
551 struct usb_mixer_elem_info *cval = kcontrol->private_data;
b8e1c73f 552 DECLARE_TLV_DB_MINMAX(scale, 0, 0);
7bc5ba7e
TI		 553
554 if (size < sizeof(scale))
555 return -ENOMEM;
0f174b35
TI		 556 if (cval->min_mute)
557 scale[0] = SNDRV_CTL_TLVT_DB_MINMAX_MUTE;
c3a3e040
JK		 558 scale[2] = cval->dBmin;
559 scale[3] = cval->dBmax;
7bc5ba7e
TI		 560 if (copy_to_user(_tlv, scale, sizeof(scale)))
561 return -EFAULT;
562 return 0;
563}
1da177e4
LT		 564
565/*
566 * parser routines begin here...
567 */
568
86e07d34 569static int parse_audio_unit(struct mixer_build *state, int unitid);
1da177e4
LT		 570
571
572/*
573 * check if the input/output channel routing is enabled on the given bitmap.
574 * used for mixer unit parser
575 */
6bc170e4
DM		 576static int check_matrix_bitmap(unsigned char *bmap,
577 int ich, int och, int num_outs)
1da177e4
LT		 578{
579 int idx = ich * num_outs + och;
580 return bmap[idx >> 3] & (0x80 >> (idx & 7));
581}
582
1da177e4
LT		 583/*
584 * add an alsa control element
585 * search and increment the index until an empty slot is found.
586 *
587 * if failed, give up and free the control instance.
588 */
589
220345e9
TI		 590int snd_usb_mixer_add_list(struct usb_mixer_elem_list *list,
591 struct snd_kcontrol *kctl,
592 bool is_std_info)
1da177e4 593{
3360b84b 594 struct usb_mixer_interface *mixer = list->mixer;
1da177e4 595 int err;
84957a8a 596
ef9d5970 597 while (snd_ctl_find_id(mixer->chip->card, &kctl->id))
1da177e4 598 kctl->id.index++;
f25ecf8f
TI		 599 err = snd_ctl_add(mixer->chip->card, kctl);
600 if (err < 0) {
6bc170e4
DM		 601 usb_audio_dbg(mixer->chip, "cannot add control (err = %d)\n",
602 err);
6639b6c2 603 return err;
1da177e4 604 }
3360b84b 605 list->kctl = kctl;
220345e9 606 list->is_std_info = is_std_info;
3360b84b
TI		 607 list->next_id_elem = mixer->id_elems[list->id];
608 mixer->id_elems[list->id] = list;
6639b6c2 609 return 0;
1da177e4
LT		 610}
611
1da177e4
LT		 612/*
613 * get a terminal name string
614 */
615
616static struct iterm_name_combo {
617 int type;
618 char *name;
619} iterm_names[] = {
620 { 0x0300, "Output" },
621 { 0x0301, "Speaker" },
622 { 0x0302, "Headphone" },
623 { 0x0303, "HMD Audio" },
624 { 0x0304, "Desktop Speaker" },
625 { 0x0305, "Room Speaker" },
626 { 0x0306, "Com Speaker" },
627 { 0x0307, "LFE" },
628 { 0x0600, "External In" },
629 { 0x0601, "Analog In" },
630 { 0x0602, "Digital In" },
631 { 0x0603, "Line" },
632 { 0x0604, "Legacy In" },
633 { 0x0605, "IEC958 In" },
634 { 0x0606, "1394 DA Stream" },
635 { 0x0607, "1394 DV Stream" },
636 { 0x0700, "Embedded" },
637 { 0x0701, "Noise Source" },
638 { 0x0702, "Equalization Noise" },
639 { 0x0703, "CD" },
640 { 0x0704, "DAT" },
641 { 0x0705, "DCC" },
642 { 0x0706, "MiniDisk" },
643 { 0x0707, "Analog Tape" },
644 { 0x0708, "Phonograph" },
645 { 0x0709, "VCR Audio" },
646 { 0x070a, "Video Disk Audio" },
647 { 0x070b, "DVD Audio" },
648 { 0x070c, "TV Tuner Audio" },
649 { 0x070d, "Satellite Rec Audio" },
650 { 0x070e, "Cable Tuner Audio" },
651 { 0x070f, "DSS Audio" },
652 { 0x0710, "Radio Receiver" },
653 { 0x0711, "Radio Transmitter" },
654 { 0x0712, "Multi-Track Recorder" },
655 { 0x0713, "Synthesizer" },
656 { 0 },
657};
658
eccfc1b8 659static int get_term_name(struct snd_usb_audio *chip, struct usb_audio_term *iterm,
1da177e4
LT		 660 unsigned char *name, int maxlen, int term_only)
661{
662 struct iterm_name_combo *names;
56a23ee5 663 int len;
1da177e4 664
56a23ee5 665 if (iterm->name) {
eccfc1b8 666 len = snd_usb_copy_string_desc(chip, iterm->name,
6bc170e4 667 name, maxlen);
56a23ee5
TI		 668 if (len)
669 return len;
670 }
1da177e4
LT		 671
672 /* virtual type - not a real terminal */
673 if (iterm->type >> 16) {
674 if (term_only)
675 return 0;
676 switch (iterm->type >> 16) {
8b3a087f 677 case UAC3_SELECTOR_UNIT:
6bc170e4
DM		 678 strcpy(name, "Selector");
679 return 8;
8b3a087f 680 case UAC3_PROCESSING_UNIT:
6bc170e4
DM		 681 strcpy(name, "Process Unit");
682 return 12;
8b3a087f 683 case UAC3_EXTENSION_UNIT:
6bc170e4
DM		 684 strcpy(name, "Ext Unit");
685 return 8;
8b3a087f 686 case UAC3_MIXER_UNIT:
6bc170e4
DM		 687 strcpy(name, "Mixer");
688 return 5;
1da177e4
LT		 689 default:
690 return sprintf(name, "Unit %d", iterm->id);
691 }
692 }
693
694 switch (iterm->type & 0xff00) {
695 case 0x0100:
6bc170e4
DM		 696 strcpy(name, "PCM");
697 return 3;
1da177e4 698 case 0x0200:
6bc170e4
DM		 699 strcpy(name, "Mic");
700 return 3;
1da177e4 701 case 0x0400:
6bc170e4
DM		 702 strcpy(name, "Headset");
703 return 7;
1da177e4 704 case 0x0500:
6bc170e4
DM		 705 strcpy(name, "Phone");
706 return 5;
1da177e4
LT		 707 }
708
6bc170e4 709 for (names = iterm_names; names->type; names++) {
1da177e4
LT		 710 if (names->type == iterm->type) {
711 strcpy(name, names->name);
712 return strlen(names->name);
713 }
6bc170e4
DM		 714 }
715
1da177e4
LT		 716 return 0;
717}
718
6cfd839a
JS		 719/*
720 * Get logical cluster information for UAC3 devices.
721 */
722static int get_cluster_channels_v3(struct mixer_build *state, unsigned int cluster_id)
723{
724 struct uac3_cluster_header_descriptor c_header;
725 int err;
726
727 err = snd_usb_ctl_msg(state->chip->dev,
728 usb_rcvctrlpipe(state->chip->dev, 0),
729 UAC3_CS_REQ_HIGH_CAPABILITY_DESCRIPTOR,
730 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
731 cluster_id,
732 snd_usb_ctrl_intf(state->chip),
733 &c_header, sizeof(c_header));
734 if (err < 0)
735 goto error;
736 if (err != sizeof(c_header)) {
737 err = -EIO;
738 goto error;
739 }
740
741 return c_header.bNrChannels;
742
743error:
744 usb_audio_err(state->chip, "cannot request logical cluster ID: %d (err: %d)\n", cluster_id, err);
745 return err;
746}
747
748/*
749 * Get number of channels for a Mixer Unit.
750 */
751static int uac_mixer_unit_get_channels(struct mixer_build *state,
752 struct uac_mixer_unit_descriptor *desc)
753{
754 int mu_channels;
6cfd839a
JS		 755
756 switch (state->mixer->protocol) {
757 case UAC_VERSION_1:
758 case UAC_VERSION_2:
759 default:
0bfe5e43
TI		 760 if (desc->bLength < sizeof(*desc) + desc->bNrInPins + 1)
761 return 0; /* no bmControls -> skip */
6cfd839a
JS		 762 mu_channels = uac_mixer_unit_bNrChannels(desc);
763 break;
764 case UAC_VERSION_3:
765 mu_channels = get_cluster_channels_v3(state,
766 uac3_mixer_unit_wClusterDescrID(desc));
767 break;
768 }
769
6cfd839a
JS		 770 return mu_channels;
771}
772
e0ccdef9
TI		 773/*
774 * Parse Input Terminal Unit
775 */
776static int __check_input_term(struct mixer_build *state, int id,
777 struct usb_audio_term *term);
778
779static int parse_term_uac1_iterm_unit(struct mixer_build *state,
780 struct usb_audio_term *term,
781 void *p1, int id)
782{
783 struct uac_input_terminal_descriptor *d = p1;
784
785 term->type = le16_to_cpu(d->wTerminalType);
786 term->channels = d->bNrChannels;
787 term->chconfig = le16_to_cpu(d->wChannelConfig);
788 term->name = d->iTerminal;
789 return 0;
790}
791
792static int parse_term_uac2_iterm_unit(struct mixer_build *state,
793 struct usb_audio_term *term,
794 void *p1, int id)
795{
796 struct uac2_input_terminal_descriptor *d = p1;
797 int err;
798
799 /* call recursively to verify the referenced clock entity */
800 err = __check_input_term(state, d->bCSourceID, term);
801 if (err < 0)
802 return err;
803
804 /* save input term properties after recursion,
805 * to ensure they are not overriden by the recursion calls
806 */
807 term->id = id;
808 term->type = le16_to_cpu(d->wTerminalType);
809 term->channels = d->bNrChannels;
810 term->chconfig = le32_to_cpu(d->bmChannelConfig);
811 term->name = d->iTerminal;
812 return 0;
813}
814
815static int parse_term_uac3_iterm_unit(struct mixer_build *state,
816 struct usb_audio_term *term,
817 void *p1, int id)
818{
819 struct uac3_input_terminal_descriptor *d = p1;
820 int err;
821
822 /* call recursively to verify the referenced clock entity */
823 err = __check_input_term(state, d->bCSourceID, term);
824 if (err < 0)
825 return err;
826
827 /* save input term properties after recursion,
828 * to ensure they are not overriden by the recursion calls
829 */
830 term->id = id;
831 term->type = le16_to_cpu(d->wTerminalType);
832
833 err = get_cluster_channels_v3(state, le16_to_cpu(d->wClusterDescrID));
834 if (err < 0)
835 return err;
836 term->channels = err;
837
838 /* REVISIT: UAC3 IT doesn't have channels cfg */
839 term->chconfig = 0;
840
841 term->name = le16_to_cpu(d->wTerminalDescrStr);
842 return 0;
843}
844
845static int parse_term_mixer_unit(struct mixer_build *state,
846 struct usb_audio_term *term,
847 void *p1, int id)
848{
849 struct uac_mixer_unit_descriptor *d = p1;
850 int protocol = state->mixer->protocol;
851 int err;
852
853 err = uac_mixer_unit_get_channels(state, d);
854 if (err <= 0)
855 return err;
856
857 term->type = UAC3_MIXER_UNIT << 16; /* virtual type */
858 term->channels = err;
859 if (protocol != UAC_VERSION_3) {
860 term->chconfig = uac_mixer_unit_wChannelConfig(d, protocol);
861 term->name = uac_mixer_unit_iMixer(d);
862 }
863 return 0;
864}
865
866static int parse_term_selector_unit(struct mixer_build *state,
867 struct usb_audio_term *term,
868 void *p1, int id)
869{
870 struct uac_selector_unit_descriptor *d = p1;
871 int err;
872
873 /* call recursively to retrieve the channel info */
874 err = __check_input_term(state, d->baSourceID[0], term);
875 if (err < 0)
876 return err;
877 term->type = UAC3_SELECTOR_UNIT << 16; /* virtual type */
878 term->id = id;
879 if (state->mixer->protocol != UAC_VERSION_3)
880 term->name = uac_selector_unit_iSelector(d);
881 return 0;
882}
883
884static int parse_term_proc_unit(struct mixer_build *state,
885 struct usb_audio_term *term,
886 void *p1, int id, int vtype)
887{
888 struct uac_processing_unit_descriptor *d = p1;
889 int protocol = state->mixer->protocol;
890 int err;
891
892 if (d->bNrInPins) {
893 /* call recursively to retrieve the channel info */
894 err = __check_input_term(state, d->baSourceID[0], term);
895 if (err < 0)
896 return err;
897 }
898
899 term->type = vtype << 16; /* virtual type */
900 term->id = id;
901
902 if (protocol == UAC_VERSION_3)
903 return 0;
904
905 if (!term->channels) {
906 term->channels = uac_processing_unit_bNrChannels(d);
907 term->chconfig = uac_processing_unit_wChannelConfig(d, protocol);
908 }
909 term->name = uac_processing_unit_iProcessing(d, protocol);
910 return 0;
911}
912
d75a170f
TI		 913static int parse_term_effect_unit(struct mixer_build *state,
914 struct usb_audio_term *term,
915 void *p1, int id)
916{
60081b35
TI		 917 struct uac2_effect_unit_descriptor *d = p1;
918 int err;
919
920 err = __check_input_term(state, d->bSourceID, term);
921 if (err < 0)
922 return err;
d75a170f
TI		 923 term->type = UAC3_EFFECT_UNIT << 16; /* virtual type */
924 term->id = id;
925 return 0;
926}
927
e0ccdef9
TI		 928static int parse_term_uac2_clock_source(struct mixer_build *state,
929 struct usb_audio_term *term,
930 void *p1, int id)
931{
932 struct uac_clock_source_descriptor *d = p1;
933
934 term->type = UAC3_CLOCK_SOURCE << 16; /* virtual type */
935 term->id = id;
936 term->name = d->iClockSource;
937 return 0;
938}
939
940static int parse_term_uac3_clock_source(struct mixer_build *state,
941 struct usb_audio_term *term,
942 void *p1, int id)
943{
944 struct uac3_clock_source_descriptor *d = p1;
945
946 term->type = UAC3_CLOCK_SOURCE << 16; /* virtual type */
947 term->id = id;
948 term->name = le16_to_cpu(d->wClockSourceStr);
949 return 0;
950}
951
952#define PTYPE(a, b) ((a) << 8 | (b))
953
1da177e4
LT		 954/*
955 * parse the source unit recursively until it reaches to a terminal
956 * or a branched unit.
957 */
19bce474 958static int __check_input_term(struct mixer_build *state, int id,
e0ccdef9 959 struct usb_audio_term *term)
1da177e4 960{
9a2fe9b8 961 int protocol = state->mixer->protocol;
23caaf19 962 void *p1;
19bce474 963 unsigned char *hdr;
1da177e4 964
19bce474
HP		 965 for (;;) {
966 /* a loop in the terminal chain? */
967 if (test_and_set_bit(id, state->termbitmap))
968 return -EINVAL;
969
970 p1 = find_audio_control_unit(state, id);
971 if (!p1)
972 break;
57f87706
TI		 973 if (!snd_usb_validate_audio_desc(p1, protocol))
974 break; /* bad descriptor */
19bce474
HP		 975
976 hdr = p1;
1da177e4 977 term->id = id;
9a2fe9b8 978
e0ccdef9
TI		 979 switch (PTYPE(protocol, hdr[2])) {
980 case PTYPE(UAC_VERSION_1, UAC_FEATURE_UNIT):
981 case PTYPE(UAC_VERSION_2, UAC_FEATURE_UNIT):
982 case PTYPE(UAC_VERSION_3, UAC3_FEATURE_UNIT): {
983 /* the header is the same for all versions */
984 struct uac_feature_unit_descriptor *d = p1;
9a2fe9b8 985
e0ccdef9
TI		 986 id = d->bSourceID;
987 break; /* continue to parse */
988 }
989 case PTYPE(UAC_VERSION_1, UAC_INPUT_TERMINAL):
990 return parse_term_uac1_iterm_unit(state, term, p1, id);
991 case PTYPE(UAC_VERSION_2, UAC_INPUT_TERMINAL):
992 return parse_term_uac2_iterm_unit(state, term, p1, id);
993 case PTYPE(UAC_VERSION_3, UAC_INPUT_TERMINAL):
994 return parse_term_uac3_iterm_unit(state, term, p1, id);
995 case PTYPE(UAC_VERSION_1, UAC_MIXER_UNIT):
996 case PTYPE(UAC_VERSION_2, UAC_MIXER_UNIT):
997 case PTYPE(UAC_VERSION_3, UAC3_MIXER_UNIT):
998 return parse_term_mixer_unit(state, term, p1, id);
999 case PTYPE(UAC_VERSION_1, UAC_SELECTOR_UNIT):
1000 case PTYPE(UAC_VERSION_2, UAC_SELECTOR_UNIT):
1001 case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SELECTOR):
1002 case PTYPE(UAC_VERSION_3, UAC3_SELECTOR_UNIT):
1003 case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SELECTOR):
1004 return parse_term_selector_unit(state, term, p1, id);
1005 case PTYPE(UAC_VERSION_1, UAC1_PROCESSING_UNIT):
1006 case PTYPE(UAC_VERSION_2, UAC2_PROCESSING_UNIT_V2):
1007 case PTYPE(UAC_VERSION_3, UAC3_PROCESSING_UNIT):
1008 return parse_term_proc_unit(state, term, p1, id,
1009 UAC3_PROCESSING_UNIT);
1010 case PTYPE(UAC_VERSION_2, UAC2_EFFECT_UNIT):
1011 case PTYPE(UAC_VERSION_3, UAC3_EFFECT_UNIT):
d75a170f 1012 return parse_term_effect_unit(state, term, p1, id);
e0ccdef9
TI		 1013 case PTYPE(UAC_VERSION_1, UAC1_EXTENSION_UNIT):
1014 case PTYPE(UAC_VERSION_2, UAC2_EXTENSION_UNIT_V2):
1015 case PTYPE(UAC_VERSION_3, UAC3_EXTENSION_UNIT):
1016 return parse_term_proc_unit(state, term, p1, id,
1017 UAC3_EXTENSION_UNIT);
1018 case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SOURCE):
1019 return parse_term_uac2_clock_source(state, term, p1, id);
1020 case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SOURCE):
1021 return parse_term_uac3_clock_source(state, term, p1, id);
1022 default:
1023 return -ENODEV;
1da177e4
LT		 1024 }
1025 }
1026 return -ENODEV;
1027}
1028
19bce474
HP		 1029
1030static int check_input_term(struct mixer_build *state, int id,
1031 struct usb_audio_term *term)
1032{
1033 memset(term, 0, sizeof(*term));
1034 memset(state->termbitmap, 0, sizeof(state->termbitmap));
1035 return __check_input_term(state, id, term);
1036}
1037
1da177e4
LT		 1038/*
1039 * Feature Unit
1040 */
1041
1042/* feature unit control information */
1043struct usb_feature_control_info {
21e9b3e9 1044 int control;
1da177e4 1045 const char *name;
bc18e31c
JS		 1046 int type; /* data type for uac1 */
1047 int type_uac2; /* data type for uac2 if different from uac1, else -1 */
1da177e4
LT		 1048};
1049
a01df925 1050static const struct usb_feature_control_info audio_feature_info[] = {
21e9b3e9
AC		 1051 { UAC_FU_MUTE, "Mute", USB_MIXER_INV_BOOLEAN, -1 },
1052 { UAC_FU_VOLUME, "Volume", USB_MIXER_S16, -1 },
1053 { UAC_FU_BASS, "Tone Control - Bass", USB_MIXER_S8, -1 },
1054 { UAC_FU_MID, "Tone Control - Mid", USB_MIXER_S8, -1 },
1055 { UAC_FU_TREBLE, "Tone Control - Treble", USB_MIXER_S8, -1 },
1056 { UAC_FU_GRAPHIC_EQUALIZER, "Graphic Equalizer", USB_MIXER_S8, -1 }, /* FIXME: not implemented yet */
1057 { UAC_FU_AUTOMATIC_GAIN, "Auto Gain Control", USB_MIXER_BOOLEAN, -1 },
1058 { UAC_FU_DELAY, "Delay Control", USB_MIXER_U16, USB_MIXER_U32 },
1059 { UAC_FU_BASS_BOOST, "Bass Boost", USB_MIXER_BOOLEAN, -1 },
1060 { UAC_FU_LOUDNESS, "Loudness", USB_MIXER_BOOLEAN, -1 },
2e0281d1 1061 /* UAC2 specific */
21e9b3e9
AC		 1062 { UAC2_FU_INPUT_GAIN, "Input Gain Control", USB_MIXER_S16, -1 },
1063 { UAC2_FU_INPUT_GAIN_PAD, "Input Gain Pad Control", USB_MIXER_S16, -1 },
1064 { UAC2_FU_PHASE_INVERTER, "Phase Inverter Control", USB_MIXER_BOOLEAN, -1 },
1da177e4
LT		 1065};
1066
52c3e317
TI		 1067static void usb_mixer_elem_info_free(struct usb_mixer_elem_info *cval)
1068{
1069 kfree(cval);
1070}
1071
1da177e4 1072/* private_free callback */
eef90451 1073void snd_usb_mixer_elem_free(struct snd_kcontrol *kctl)
1da177e4 1074{
52c3e317 1075 usb_mixer_elem_info_free(kctl->private_data);
4d572776 1076 kctl->private_data = NULL;
1da177e4
LT		 1077}
1078
1da177e4
LT		 1079/*
1080 * interface to ALSA control for feature/mixer units
1081 */
1082
dcaaf9f2
TI		 1083/* volume control quirks */
1084static void volume_control_quirks(struct usb_mixer_elem_info *cval,
1085 struct snd_kcontrol *kctl)
1086{
3360b84b 1087 struct snd_usb_audio *chip = cval->head.mixer->chip;
0ba41d91 1088 switch (chip->usb_id) {
d50ed624 1089 case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
e9a25e04 1090 case USB_ID(0x0763, 0x2031): /* M-Audio Fast Track C600 */
d50ed624
EZ		 1091 if (strcmp(kctl->id.name, "Effect Duration") == 0) {
1092 cval->min = 0x0000;
1093 cval->max = 0xffff;
1094 cval->res = 0x00e6;
1095 break;
1096 }
1097 if (strcmp(kctl->id.name, "Effect Volume") == 0 ||
1098 strcmp(kctl->id.name, "Effect Feedback Volume") == 0) {
1099 cval->min = 0x00;
1100 cval->max = 0xff;
1101 break;
1102 }
1103 if (strstr(kctl->id.name, "Effect Return") != NULL) {
1104 cval->min = 0xb706;
1105 cval->max = 0xff7b;
1106 cval->res = 0x0073;
1107 break;
1108 }
1109 if ((strstr(kctl->id.name, "Playback Volume") != NULL) ||
1110 (strstr(kctl->id.name, "Effect Send") != NULL)) {
1111 cval->min = 0xb5fb; /* -73 dB = 0xb6ff */
1112 cval->max = 0xfcfe;
1113 cval->res = 0x0073;
1114 }
1115 break;
1116
d34bf148
FH		 1117 case USB_ID(0x0763, 0x2081): /* M-Audio Fast Track Ultra 8R */
1118 case USB_ID(0x0763, 0x2080): /* M-Audio Fast Track Ultra */
1119 if (strcmp(kctl->id.name, "Effect Duration") == 0) {
0ba41d91
TI		 1120 usb_audio_info(chip,
1121 "set quirk for FTU Effect Duration\n");
d34bf148
FH		 1122 cval->min = 0x0000;
1123 cval->max = 0x7f00;
1124 cval->res = 0x0100;
1125 break;
1126 }
1127 if (strcmp(kctl->id.name, "Effect Volume") == 0 ||
1128 strcmp(kctl->id.name, "Effect Feedback Volume") == 0) {
0ba41d91
TI		 1129 usb_audio_info(chip,
1130 "set quirks for FTU Effect Feedback/Volume\n");
d34bf148
FH		 1131 cval->min = 0x00;
1132 cval->max = 0x7f;
1133 break;
1134 }
1135 break;
1136
21493316
FC		 1137 case USB_ID(0x0d8c, 0x0103):
1138 if (!strcmp(kctl->id.name, "PCM Playback Volume")) {
1139 usb_audio_info(chip,
1140 "set volume quirk for CM102-A+/102S+\n");
1141 cval->min = -256;
1142 }
1143 break;
1144
dcaaf9f2
TI		 1145 case USB_ID(0x0471, 0x0101):
1146 case USB_ID(0x0471, 0x0104):
1147 case USB_ID(0x0471, 0x0105):
1148 case USB_ID(0x0672, 0x1041):
1149 /* quirk for UDA1321/N101.
1150 * note that detection between firmware 2.1.1.7 (N101)
1151 * and later 2.1.1.21 is not very clear from datasheets.
1152 * I hope that the min value is -15360 for newer firmware --jk
1153 */
1154 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1155 cval->min == -15616) {
0ba41d91 1156 usb_audio_info(chip,
dcaaf9f2
TI		 1157 "set volume quirk for UDA1321/N101 chip\n");
1158 cval->max = -256;
1159 }
1160 break;
1161
1162 case USB_ID(0x046d, 0x09a4):
1163 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
0ba41d91 1164 usb_audio_info(chip,
dcaaf9f2
TI		 1165 "set volume quirk for QuickCam E3500\n");
1166 cval->min = 6080;
1167 cval->max = 8768;
1168 cval->res = 192;
1169 }
1170 break;
1171
e805ca8b 1172 case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */
dcaaf9f2
TI		 1173 case USB_ID(0x046d, 0x0808):
1174 case USB_ID(0x046d, 0x0809):
64559311 1175 case USB_ID(0x046d, 0x0819): /* Logitech Webcam C210 */
36691e1b 1176 case USB_ID(0x046d, 0x081b): /* HD Webcam c310 */
55c0008b 1177 case USB_ID(0x046d, 0x081d): /* HD Webcam c510 */
11e7064f 1178 case USB_ID(0x046d, 0x0825): /* HD Webcam c270 */
140d37de 1179 case USB_ID(0x046d, 0x0826): /* HD Webcam c525 */
1ef9f058 1180 case USB_ID(0x046d, 0x08ca): /* Logitech Quickcam Fusion */
dcaaf9f2 1181 case USB_ID(0x046d, 0x0991):
82ffb6fc 1182 case USB_ID(0x046d, 0x09a2): /* QuickCam Communicate Deluxe/S7500 */
dcaaf9f2
TI		 1183 /* Most audio usb devices lie about volume resolution.
1184 * Most Logitech webcams have res = 384.
82ffb6fc 1185 * Probably there is some logitech magic behind this number --fishor
dcaaf9f2
TI		 1186 */
1187 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
0ba41d91 1188 usb_audio_info(chip,
dcaaf9f2
TI		 1189 "set resolution quirk: cval->res = 384\n");
1190 cval->res = 384;
1191 }
1192 break;
4020d1cc
CC		 1193 case USB_ID(0x0495, 0x3042): /* ESS Technology Asus USB DAC */
1194 if ((strstr(kctl->id.name, "Playback Volume") != NULL) ||
1195 strstr(kctl->id.name, "Capture Volume") != NULL) {
1196 cval->min >>= 8;
1197 cval->max = 0;
1198 cval->res = 1;
1199 }
1200 break;
dcaaf9f2
TI		 1201 }
1202}
1203
1da177e4
LT		 1204/*
1205 * retrieve the minimum and maximum values for the specified control
1206 */
dcaaf9f2
TI		 1207static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval,
1208 int default_min, struct snd_kcontrol *kctl)
1da177e4
LT		 1209{
1210 /* for failsafe */
1211 cval->min = default_min;
1212 cval->max = cval->min + 1;
1213 cval->res = 1;
c3a3e040 1214 cval->dBmin = cval->dBmax = 0;
1da177e4
LT		 1215
1216 if (cval->val_type == USB_MIXER_BOOLEAN ||
1217 cval->val_type == USB_MIXER_INV_BOOLEAN) {
1218 cval->initialized = 1;
1219 } else {
1220 int minchn = 0;
1221 if (cval->cmask) {
1222 int i;
1223 for (i = 0; i < MAX_CHANNELS; i++)
1224 if (cval->cmask & (1 << i)) {
1225 minchn = i + 1;
1226 break;
1227 }
1228 }
de48c7bc
DM		 1229 if (get_ctl_value(cval, UAC_GET_MAX, (cval->control << 8) | minchn, &cval->max) < 0 ||
1230 get_ctl_value(cval, UAC_GET_MIN, (cval->control << 8) | minchn, &cval->min) < 0) {
3360b84b 1231 usb_audio_err(cval->head.mixer->chip,
0ba41d91 1232 "%d:%d: cannot get min/max values for control %d (id %d)\n",
0aef31b7 1233 cval->head.id, mixer_ctrl_intf(cval->head.mixer),
3360b84b 1234 cval->control, cval->head.id);
1da177e4
LT		 1235 return -EINVAL;
1236 }
6bc170e4
DM		 1237 if (get_ctl_value(cval, UAC_GET_RES,
1238 (cval->control << 8) | minchn,
1239 &cval->res) < 0) {
1da177e4 1240 cval->res = 1;
85db1cfb 1241 } else if (cval->head.mixer->protocol == UAC_VERSION_1) {
1da177e4
LT		 1242 int last_valid_res = cval->res;
1243
1244 while (cval->res > 1) {
7b1eda22 1245 if (snd_usb_mixer_set_ctl_value(cval, UAC_SET_RES,
6bc170e4
DM		 1246 (cval->control << 8) | minchn,
1247 cval->res / 2) < 0)
1da177e4
LT		 1248 break;
1249 cval->res /= 2;
1250 }
6bc170e4
DM		 1251 if (get_ctl_value(cval, UAC_GET_RES,
1252 (cval->control << 8) | minchn, &cval->res) < 0)
1da177e4
LT		 1253 cval->res = last_valid_res;
1254 }
1255 if (cval->res == 0)
1256 cval->res = 1;
14790f1c
TI		 1257
1258 /* Additional checks for the proper resolution
1259 *
1260 * Some devices report smaller resolutions than actually
1261 * reacting. They don't return errors but simply clip
1262 * to the lower aligned value.
1263 */
1264 if (cval->min + cval->res < cval->max) {
1265 int last_valid_res = cval->res;
1266 int saved, test, check;
167beb17
TI		 1267 if (get_cur_mix_raw(cval, minchn, &saved) < 0)
1268 goto no_res_check;
14790f1c
TI		 1269 for (;;) {
1270 test = saved;
1271 if (test < cval->max)
1272 test += cval->res;
1273 else
1274 test -= cval->res;
1275 if (test < cval->min || test > cval->max ||
eef90451 1276 snd_usb_set_cur_mix_value(cval, minchn, 0, test) ||
641b4879 1277 get_cur_mix_raw(cval, minchn, &check)) {
14790f1c
TI		 1278 cval->res = last_valid_res;
1279 break;
1280 }
1281 if (test == check)
1282 break;
1283 cval->res *= 2;
1284 }
eef90451 1285 snd_usb_set_cur_mix_value(cval, minchn, 0, saved);
14790f1c
TI		 1286 }
1287
167beb17 1288no_res_check:
1da177e4
LT		 1289 cval->initialized = 1;
1290 }
c3a3e040 1291
dcaaf9f2
TI		 1292 if (kctl)
1293 volume_control_quirks(cval, kctl);
1294
c3a3e040
JK		 1295 /* USB descriptions contain the dB scale in 1/256 dB unit
1296 * while ALSA TLV contains in 1/100 dB unit
1297 */
1298 cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256;
1299 cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256;
1300 if (cval->dBmin > cval->dBmax) {
1301 /* something is wrong; assume it's either from/to 0dB */
1302 if (cval->dBmin < 0)
1303 cval->dBmax = 0;
1304 else if (cval->dBmin > 0)
1305 cval->dBmin = 0;
1306 if (cval->dBmin > cval->dBmax) {
1307 /* totally crap, return an error */
1308 return -EINVAL;
1309 }
21cba9c5
TI		 1310 } else {
1311 /* if the max volume is too low, it's likely a bogus range;
1312 * here we use -96dB as the threshold
1313 */
1314 if (cval->dBmax <= -9600) {
1315 usb_audio_info(cval->head.mixer->chip,
1316 "%d:%d: bogus dB values (%d/%d), disabling dB reporting\n",
1317 cval->head.id, mixer_ctrl_intf(cval->head.mixer),
1318 cval->dBmin, cval->dBmax);
1319 cval->dBmin = cval->dBmax = 0;
1320 }
c3a3e040
JK		 1321 }
1322
1da177e4
LT		 1323 return 0;
1324}
1325
dcaaf9f2 1326#define get_min_max(cval, def) get_min_max_with_quirks(cval, def, NULL)
1da177e4
LT		 1327
1328/* get a feature/mixer unit info */
6bc170e4
DM		 1329static int mixer_ctl_feature_info(struct snd_kcontrol *kcontrol,
1330 struct snd_ctl_elem_info *uinfo)
1da177e4 1331{
86e07d34 1332 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1333
1334 if (cval->val_type == USB_MIXER_BOOLEAN ||
1335 cval->val_type == USB_MIXER_INV_BOOLEAN)
1336 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1337 else
1338 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1339 uinfo->count = cval->channels;
1340 if (cval->val_type == USB_MIXER_BOOLEAN ||
1341 cval->val_type == USB_MIXER_INV_BOOLEAN) {
1342 uinfo->value.integer.min = 0;
1343 uinfo->value.integer.max = 1;
1344 } else {
9fcd0ab1 1345 if (!cval->initialized) {
dcaaf9f2 1346 get_min_max_with_quirks(cval, 0, kcontrol);
9fcd0ab1
TI		 1347 if (cval->initialized && cval->dBmin >= cval->dBmax) {
1348 kcontrol->vd[0].access &=
1349 ~(SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1350 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK);
3360b84b 1351 snd_ctl_notify(cval->head.mixer->chip->card,
9fcd0ab1
TI		 1352 SNDRV_CTL_EVENT_MASK_INFO,
1353 &kcontrol->id);
1354 }
1355 }
1da177e4 1356 uinfo->value.integer.min = 0;
14790f1c 1357 uinfo->value.integer.max =
e4d8aef2 1358 DIV_ROUND_UP(cval->max - cval->min, cval->res);
1da177e4
LT		 1359 }
1360 return 0;
1361}
1362
1363/* get the current value from feature/mixer unit */
6bc170e4
DM		 1364static int mixer_ctl_feature_get(struct snd_kcontrol *kcontrol,
1365 struct snd_ctl_elem_value *ucontrol)
1da177e4 1366{
86e07d34 1367 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1368 int c, cnt, val, err;
1369
641b4879 1370 ucontrol->value.integer.value[0] = cval->min;
1da177e4
LT		 1371 if (cval->cmask) {
1372 cnt = 0;
1373 for (c = 0; c < MAX_CHANNELS; c++) {
641b4879
TI		 1374 if (!(cval->cmask & (1 << c)))
1375 continue;
eef90451 1376 err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &val);
641b4879 1377 if (err < 0)
5aeee342 1378 return filter_error(cval, err);
641b4879
TI		 1379 val = get_relative_value(cval, val);
1380 ucontrol->value.integer.value[cnt] = val;
1381 cnt++;
1da177e4 1382 }
641b4879 1383 return 0;
1da177e4
LT		 1384 } else {
1385 /* master channel */
eef90451 1386 err = snd_usb_get_cur_mix_value(cval, 0, 0, &val);
641b4879 1387 if (err < 0)
5aeee342 1388 return filter_error(cval, err);
1da177e4
LT		 1389 val = get_relative_value(cval, val);
1390 ucontrol->value.integer.value[0] = val;
1391 }
1392 return 0;
1393}
1394
1395/* put the current value to feature/mixer unit */
6bc170e4
DM		 1396static int mixer_ctl_feature_put(struct snd_kcontrol *kcontrol,
1397 struct snd_ctl_elem_value *ucontrol)
1da177e4 1398{
86e07d34 1399 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 1400 int c, cnt, val, oval, err;
1401 int changed = 0;
1402
1403 if (cval->cmask) {
1404 cnt = 0;
1405 for (c = 0; c < MAX_CHANNELS; c++) {
641b4879
TI		 1406 if (!(cval->cmask & (1 << c)))
1407 continue;
eef90451 1408 err = snd_usb_get_cur_mix_value(cval, c + 1, cnt, &oval);
641b4879 1409 if (err < 0)
5aeee342 1410 return filter_error(cval, err);
641b4879
TI		 1411 val = ucontrol->value.integer.value[cnt];
1412 val = get_abs_value(cval, val);
1413 if (oval != val) {
eef90451 1414 snd_usb_set_cur_mix_value(cval, c + 1, cnt, val);
641b4879 1415 changed = 1;
1da177e4 1416 }
641b4879 1417 cnt++;
1da177e4
LT		 1418 }
1419 } else {
1420 /* master channel */
eef90451 1421 err = snd_usb_get_cur_mix_value(cval, 0, 0, &oval);
1da177e4 1422 if (err < 0)
5aeee342 1423 return filter_error(cval, err);
1da177e4
LT		 1424 val = ucontrol->value.integer.value[0];
1425 val = get_abs_value(cval, val);
1426 if (val != oval) {
eef90451 1427 snd_usb_set_cur_mix_value(cval, 0, 0, val);
1da177e4
LT		 1428 changed = 1;
1429 }
1430 }
1431 return changed;
1432}
1433
568fa7e0
AC		 1434/* get the boolean value from the master channel of a UAC control */
1435static int mixer_ctl_master_bool_get(struct snd_kcontrol *kcontrol,
1436 struct snd_ctl_elem_value *ucontrol)
5a222e84
AC		 1437{
1438 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1439 int val, err;
1440
1441 err = snd_usb_get_cur_mix_value(cval, 0, 0, &val);
1442 if (err < 0)
1443 return filter_error(cval, err);
1444 val = (val != 0);
1445 ucontrol->value.integer.value[0] = val;
1446 return 0;
1447}
1448
69644fca
KHF		 1449static int get_connector_value(struct usb_mixer_elem_info *cval,
1450 char *name, int *val)
1d38f5d8 1451{
1d38f5d8 1452 struct snd_usb_audio *chip = cval->head.mixer->chip;
69644fca 1453 int idx = 0, validx, ret;
1d38f5d8
JS		 1454
1455 validx = cval->control << 8 | 0;
1456
1457 ret = snd_usb_lock_shutdown(chip) ? -EIO : 0;
1458 if (ret)
1459 goto error;
1460
0aef31b7 1461 idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8);
1d38f5d8
JS		 1462 if (cval->head.mixer->protocol == UAC_VERSION_2) {
1463 struct uac2_connectors_ctl_blk uac2_conn;
1464
1465 ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR,
1466 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
1467 validx, idx, &uac2_conn, sizeof(uac2_conn));
69644fca
KHF		 1468 if (val)
1469 *val = !!uac2_conn.bNrChannels;
1d38f5d8
JS		 1470 } else { /* UAC_VERSION_3 */
1471 struct uac3_insertion_ctl_blk uac3_conn;
1472
1473 ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR,
1474 USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
1475 validx, idx, &uac3_conn, sizeof(uac3_conn));
69644fca
KHF		 1476 if (val)
1477 *val = !!uac3_conn.bmConInserted;
1d38f5d8
JS		 1478 }
1479
1480 snd_usb_unlock_shutdown(chip);
1481
1482 if (ret < 0) {
69644fca
KHF		 1483 if (name && strstr(name, "Speaker")) {
1484 if (val)
1485 *val = 1;
f8c11eb7
KHF		 1486 return 0;
1487 }
1d38f5d8
JS		 1488error:
1489 usb_audio_err(chip,
1490 "cannot get connectors status: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
1491 UAC_GET_CUR, validx, idx, cval->val_type);
48cc4297 1492 return filter_error(cval, ret);
1d38f5d8
JS		 1493 }
1494
69644fca
KHF		 1495 return ret;
1496}
1497
1498/* get the connectors status and report it as boolean type */
1499static int mixer_ctl_connector_get(struct snd_kcontrol *kcontrol,
1500 struct snd_ctl_elem_value *ucontrol)
1501{
1502 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1503 int ret, val;
1504
1505 ret = get_connector_value(cval, kcontrol->id.name, &val);
1506
1507 if (ret < 0)
1508 return ret;
1509
1d38f5d8
JS		 1510 ucontrol->value.integer.value[0] = val;
1511 return 0;
1512}
1513
195727e8 1514static const struct snd_kcontrol_new usb_feature_unit_ctl = {
1da177e4
LT		 1515 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1516 .name = "", /* will be filled later manually */
1517 .info = mixer_ctl_feature_info,
1518 .get = mixer_ctl_feature_get,
1519 .put = mixer_ctl_feature_put,
1520};
1521
23caaf19 1522/* the read-only variant */
8fdaebbb 1523static const struct snd_kcontrol_new usb_feature_unit_ctl_ro = {
23caaf19
DM		 1524 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1525 .name = "", /* will be filled later manually */
1526 .info = mixer_ctl_feature_info,
1527 .get = mixer_ctl_feature_get,
1528 .put = NULL,
1529};
1530
568fa7e0
AC		 1531/*
1532 * A control which shows the boolean value from reading a UAC control on
1533 * the master channel.
1534 */
195727e8 1535static const struct snd_kcontrol_new usb_bool_master_control_ctl_ro = {
5a222e84
AC		 1536 .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1537 .name = "", /* will be filled later manually */
1538 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1539 .info = snd_ctl_boolean_mono_info,
568fa7e0 1540 .get = mixer_ctl_master_bool_get,
5a222e84
AC		 1541 .put = NULL,
1542};
1543
1d38f5d8
JS		 1544static const struct snd_kcontrol_new usb_connector_ctl_ro = {
1545 .iface = SNDRV_CTL_ELEM_IFACE_CARD,
1546 .name = "", /* will be filled later manually */
1547 .access = SNDRV_CTL_ELEM_ACCESS_READ,
1548 .info = snd_ctl_boolean_mono_info,
1549 .get = mixer_ctl_connector_get,
1550 .put = NULL,
1551};
1552
6bc170e4
DM		 1553/*
1554 * This symbol is exported in order to allow the mixer quirks to
1555 * hook up to the standard feature unit control mechanism
1556 */
195727e8 1557const struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl;
1da177e4
LT		 1558
1559/*
1560 * build a feature control
1561 */
08d1e635
TI		 1562static size_t append_ctl_name(struct snd_kcontrol *kctl, const char *str)
1563{
1564 return strlcat(kctl->id.name, str, sizeof(kctl->id.name));
1565}
1566
6bc170e4
DM		 1567/*
1568 * A lot of headsets/headphones have a "Speaker" mixer. Make sure we
1569 * rename it to "Headphone". We determine if something is a headphone
1570 * similar to how udev determines form factor.
1571 */
9b4ef977
DH		 1572static void check_no_speaker_on_headset(struct snd_kcontrol *kctl,
1573 struct snd_card *card)
1574{
d1254593 1575 static const char * const names_to_check[] = {
9b4ef977 1576 "Headset", "headset", "Headphone", "headphone", NULL};
d1254593 1577 const char * const *s;
e0f17c75 1578 bool found = false;
9b4ef977
DH		 1579
1580 if (strcmp("Speaker", kctl->id.name))
1581 return;
1582
1583 for (s = names_to_check; *s; s++)
1584 if (strstr(card->shortname, *s)) {
e0f17c75 1585 found = true;
9b4ef977
DH		 1586 break;
1587 }
1588
1589 if (!found)
1590 return;
1591
75b1a8f9 1592 strscpy(kctl->id.name, "Headphone", sizeof(kctl->id.name));
9b4ef977
DH		 1593}
1594
a01df925 1595static const struct usb_feature_control_info *get_feature_control_info(int control)
21e9b3e9
AC		 1596{
1597 int i;
1598
1599 for (i = 0; i < ARRAY_SIZE(audio_feature_info); ++i) {
1600 if (audio_feature_info[i].control == control)
1601 return &audio_feature_info[i];
1602 }
1603 return NULL;
1604}
1605
17156f23
RB		 1606static void __build_feature_ctl(struct usb_mixer_interface *mixer,
1607 const struct usbmix_name_map *imap,
1608 unsigned int ctl_mask, int control,
1609 struct usb_audio_term *iterm,
1610 struct usb_audio_term *oterm,
1611 int unitid, int nameid, int readonly_mask)
1da177e4 1612{
a01df925 1613 const struct usb_feature_control_info *ctl_info;
1da177e4
LT		 1614 unsigned int len = 0;
1615 int mapped_name = 0;
86e07d34
TI		 1616 struct snd_kcontrol *kctl;
1617 struct usb_mixer_elem_info *cval;
c3a3e040 1618 const struct usbmix_name_map *map;
80acefff 1619 unsigned int range;
1da177e4 1620
65f25da4 1621 if (control == UAC_FU_GRAPHIC_EQUALIZER) {
1da177e4
LT		 1622 /* FIXME: not supported yet */
1623 return;
1624 }
1625
17156f23 1626 map = find_map(imap, unitid, control);
c3a3e040 1627 if (check_ignored_ctl(map))
1da177e4
LT		 1628 return;
1629
561b220a 1630 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
a860d95f 1631 if (!cval)
1da177e4 1632 return;
17156f23 1633 snd_usb_mixer_elem_init_std(&cval->head, mixer, unitid);
1da177e4
LT		 1634 cval->control = control;
1635 cval->cmask = ctl_mask;
21e9b3e9
AC		 1636
1637 ctl_info = get_feature_control_info(control);
62376025 1638 if (!ctl_info) {
52c3e317 1639 usb_mixer_elem_info_free(cval);
21e9b3e9 1640 return;
62376025 1641 }
17156f23 1642 if (mixer->protocol == UAC_VERSION_1)
bc18e31c
JS		 1643 cval->val_type = ctl_info->type;
1644 else /* UAC_VERSION_2 */
1645 cval->val_type = ctl_info->type_uac2 >= 0 ?
1646 ctl_info->type_uac2 : ctl_info->type;
1647
a6a33259 1648 if (ctl_mask == 0) {
1da177e4 1649 cval->channels = 1; /* master channel */
a6a33259
DM		 1650 cval->master_readonly = readonly_mask;
1651 } else {
1da177e4
LT		 1652 int i, c = 0;
1653 for (i = 0; i < 16; i++)
1654 if (ctl_mask & (1 << i))
1655 c++;
1656 cval->channels = c;
a6a33259 1657 cval->ch_readonly = readonly_mask;
1da177e4
LT		 1658 }
1659
6bc170e4
DM		 1660 /*
1661 * If all channels in the mask are marked read-only, make the control
eef90451 1662 * read-only. snd_usb_set_cur_mix_value() will check the mask again and won't
6bc170e4
DM		 1663 * issue write commands to read-only channels.
1664 */
a6a33259 1665 if (cval->channels == readonly_mask)
23caaf19
DM		 1666 kctl = snd_ctl_new1(&usb_feature_unit_ctl_ro, cval);
1667 else
1668 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
1669
6bc170e4 1670 if (!kctl) {
17156f23 1671 usb_audio_err(mixer->chip, "cannot malloc kcontrol\n");
52c3e317 1672 usb_mixer_elem_info_free(cval);
1da177e4
LT		 1673 return;
1674 }
eef90451 1675 kctl->private_free = snd_usb_mixer_elem_free;
1da177e4 1676
c3a3e040 1677 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
1da177e4 1678 mapped_name = len != 0;
6bc170e4 1679 if (!len && nameid)
17156f23 1680 len = snd_usb_copy_string_desc(mixer->chip, nameid,
c3a3e040 1681 kctl->id.name, sizeof(kctl->id.name));
1da177e4
LT		 1682
1683 switch (control) {
65f25da4
DM		 1684 case UAC_FU_MUTE:
1685 case UAC_FU_VOLUME:
6bc170e4
DM		 1686 /*
1687 * determine the control name. the rule is:
1da177e4
LT		 1688 * - if a name id is given in descriptor, use it.
1689 * - if the connected input can be determined, then use the name
1690 * of terminal type.
1691 * - if the connected output can be determined, use it.
1692 * - otherwise, anonymous name.
1693 */
6bc170e4 1694 if (!len) {
17156f23
RB		 1695 if (iterm)
1696 len = get_term_name(mixer->chip, iterm,
1697 kctl->id.name,
1698 sizeof(kctl->id.name), 1);
1699 if (!len && oterm)
1700 len = get_term_name(mixer->chip, oterm,
6bc170e4
DM		 1701 kctl->id.name,
1702 sizeof(kctl->id.name), 1);
1703 if (!len)
49fd46d2
DM		 1704 snprintf(kctl->id.name, sizeof(kctl->id.name),
1705 "Feature %d", unitid);
1da177e4 1706 }
9b4ef977
DH		 1707
1708 if (!mapped_name)
17156f23 1709 check_no_speaker_on_headset(kctl, mixer->chip->card);
9b4ef977 1710
6bc170e4
DM		 1711 /*
1712 * determine the stream direction:
1da177e4
LT		 1713 * if the connected output is USB stream, then it's likely a
1714 * capture stream. otherwise it should be playback (hopefully :)
1715 */
17156f23
RB		 1716 if (!mapped_name && oterm && !(oterm->type >> 16)) {
1717 if ((oterm->type & 0xff00) == 0x0100)
49fd46d2 1718 append_ctl_name(kctl, " Capture");
6bc170e4 1719 else
49fd46d2 1720 append_ctl_name(kctl, " Playback");
1da177e4 1721 }
65f25da4 1722 append_ctl_name(kctl, control == UAC_FU_MUTE ?
08d1e635 1723 " Switch" : " Volume");
1da177e4 1724 break;
1da177e4 1725 default:
6bc170e4 1726 if (!len)
75b1a8f9 1727 strscpy(kctl->id.name, audio_feature_info[control-1].name,
1da177e4
LT		 1728 sizeof(kctl->id.name));
1729 break;
1730 }
1731
e182534d
TI		 1732 /* get min/max values */
1733 get_min_max_with_quirks(cval, 0, kctl);
1734
e9a0ef0b
TI		 1735 /* skip a bogus volume range */
1736 if (cval->max <= cval->min) {
1737 usb_audio_dbg(mixer->chip,
1738 "[%d] FU [%s] skipped due to invalid volume\n",
1739 cval->head.id, kctl->id.name);
1740 snd_ctl_free_one(kctl);
1741 return;
1742 }
1743
1744
e182534d
TI		 1745 if (control == UAC_FU_VOLUME) {
1746 check_mapped_dB(map, cval);
1747 if (cval->dBmin < cval->dBmax || !cval->initialized) {
1748 kctl->tlv.c = snd_usb_mixer_vol_tlv;
1749 kctl->vd[0].access |=
1750 SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1751 SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK;
1752 }
1753 }
1754
17156f23 1755 snd_usb_mixer_fu_apply_quirk(mixer, cval, unitid, kctl);
42e3121d 1756
80acefff 1757 range = (cval->max - cval->min) / cval->res;
6bc170e4
DM		 1758 /*
1759 * Are there devices with volume range more than 255? I use a bit more
80acefff
AF		 1760 * to be sure. 384 is a resolution magic number found on Logitech
1761 * devices. It will definitively catch all buggy Logitech devices.
1762 */
1763 if (range > 384) {
17156f23 1764 usb_audio_warn(mixer->chip,
82c1cf0a 1765 "Warning! Unlikely big volume range (=%u), cval->res is probably wrong.",
6bc170e4 1766 range);
17156f23 1767 usb_audio_warn(mixer->chip,
82c1cf0a 1768 "[%d] FU [%s] ch = %d, val = %d/%d/%d",
3360b84b 1769 cval->head.id, kctl->id.name, cval->channels,
6bc170e4 1770 cval->min, cval->max, cval->res);
80acefff
AF		 1771 }
1772
17156f23 1773 usb_audio_dbg(mixer->chip, "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
3360b84b 1774 cval->head.id, kctl->id.name, cval->channels,
6bc170e4 1775 cval->min, cval->max, cval->res);
3360b84b 1776 snd_usb_mixer_add_control(&cval->head, kctl);
1da177e4
LT		 1777}
1778
17156f23
RB		 1779static void build_feature_ctl(struct mixer_build *state, void *raw_desc,
1780 unsigned int ctl_mask, int control,
1781 struct usb_audio_term *iterm, int unitid,
1782 int readonly_mask)
1783{
1784 struct uac_feature_unit_descriptor *desc = raw_desc;
1785 int nameid = uac_feature_unit_iFeature(desc);
1786
1787 __build_feature_ctl(state->mixer, state->map, ctl_mask, control,
1788 iterm, &state->oterm, unitid, nameid, readonly_mask);
1789}
1790
1791static void build_feature_ctl_badd(struct usb_mixer_interface *mixer,
1792 unsigned int ctl_mask, int control, int unitid,
1793 const struct usbmix_name_map *badd_map)
1794{
1795 __build_feature_ctl(mixer, badd_map, ctl_mask, control,
1796 NULL, NULL, unitid, 0, 0);
1797}
1798
167e1fb1 1799static void get_connector_control_name(struct usb_mixer_interface *mixer,
5a222e84
AC		 1800 struct usb_audio_term *term,
1801 bool is_input, char *name, int name_size)
1802{
167e1fb1 1803 int name_len = get_term_name(mixer->chip, term, name, name_size, 0);
5a222e84
AC		 1804
1805 if (name_len == 0)
75b1a8f9 1806 strscpy(name, "Unknown", name_size);
5a222e84
AC		 1807
1808 /*
1809 * sound/core/ctljack.c has a convention of naming jack controls
1810 * by ending in " Jack". Make it slightly more useful by
1811 * indicating Input or Output after the terminal name.
1812 */
1813 if (is_input)
1814 strlcat(name, " - Input Jack", name_size);
1815 else
1816 strlcat(name, " - Output Jack", name_size);
1817}
1818
8dde723f
TI		 1819/* get connector value to "wake up" the USB audio */
1820static int connector_mixer_resume(struct usb_mixer_elem_list *list)
1821{
1822 struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list);
1823
1824 get_connector_value(cval, NULL, NULL);
1825 return 0;
1826}
1827
5a222e84 1828/* Build a mixer control for a UAC connector control (jack-detect) */
167e1fb1 1829static void build_connector_control(struct usb_mixer_interface *mixer,
934b9659 1830 const struct usbmix_name_map *imap,
5a222e84
AC		 1831 struct usb_audio_term *term, bool is_input)
1832{
1833 struct snd_kcontrol *kctl;
1834 struct usb_mixer_elem_info *cval;
a43c1c41 1835 const struct usbmix_name_map *map;
5a222e84 1836
a43c1c41
TI		 1837 map = find_map(imap, term->id, 0);
1838 if (check_ignored_ctl(map))
934b9659
TI		 1839 return;
1840
5a222e84
AC		 1841 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1842 if (!cval)
1843 return;
167e1fb1 1844 snd_usb_mixer_elem_init_std(&cval->head, mixer, term->id);
8dde723f
TI		 1845
1846 /* set up a specific resume callback */
1847 cval->head.resume = connector_mixer_resume;
1848
568fa7e0 1849 /*
1d38f5d8
JS		 1850 * UAC2: The first byte from reading the UAC2_TE_CONNECTOR control returns the
1851 * number of channels connected.
1852 *
1853 * UAC3: The first byte specifies size of bitmap for the inserted controls. The
1854 * following byte(s) specifies which connectors are inserted.
1855 *
1856 * This boolean ctl will simply report if any channels are connected
1857 * or not.
568fa7e0 1858 */
167e1fb1 1859 if (mixer->protocol == UAC_VERSION_2)
1d38f5d8
JS		 1860 cval->control = UAC2_TE_CONNECTOR;
1861 else /* UAC_VERSION_3 */
1862 cval->control = UAC3_TE_INSERTION;
1863
5a222e84
AC		 1864 cval->val_type = USB_MIXER_BOOLEAN;
1865 cval->channels = 1; /* report true if any channel is connected */
1866 cval->min = 0;
1867 cval->max = 1;
1d38f5d8 1868 kctl = snd_ctl_new1(&usb_connector_ctl_ro, cval);
5a222e84 1869 if (!kctl) {
167e1fb1 1870 usb_audio_err(mixer->chip, "cannot malloc kcontrol\n");
52c3e317 1871 usb_mixer_elem_info_free(cval);
5a222e84
AC		 1872 return;
1873 }
a43c1c41
TI		 1874
1875 if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name)))
1876 strlcat(kctl->id.name, " Jack", sizeof(kctl->id.name));
1877 else
1878 get_connector_control_name(mixer, term, is_input, kctl->id.name,
1879 sizeof(kctl->id.name));
5a222e84
AC		 1880 kctl->private_free = snd_usb_mixer_elem_free;
1881 snd_usb_mixer_add_control(&cval->head, kctl);
1882}
1883
cddaafb9
DM		 1884static int parse_clock_source_unit(struct mixer_build *state, int unitid,
1885 void *_ftr)
1886{
1887 struct uac_clock_source_descriptor *hdr = _ftr;
1888 struct usb_mixer_elem_info *cval;
1889 struct snd_kcontrol *kctl;
1890 char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
1891 int ret;
1892
1893 if (state->mixer->protocol != UAC_VERSION_2)
1894 return -EINVAL;
1895
cddaafb9
DM		 1896 /*
1897 * The only property of this unit we are interested in is the
1898 * clock source validity. If that isn't readable, just bail out.
1899 */
9a2fe9b8 1900 if (!uac_v2v3_control_is_readable(hdr->bmControls,
21e9b3e9 1901 UAC2_CS_CONTROL_CLOCK_VALID))
cddaafb9
DM		 1902 return 0;
1903
1904 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
1905 if (!cval)
1906 return -ENOMEM;
1907
1908 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, hdr->bClockID);
1909
1910 cval->min = 0;
1911 cval->max = 1;
1912 cval->channels = 1;
1913 cval->val_type = USB_MIXER_BOOLEAN;
1914 cval->control = UAC2_CS_CONTROL_CLOCK_VALID;
1915
568fa7e0
AC		 1916 cval->master_readonly = 1;
1917 /* From UAC2 5.2.5.1.2 "Only the get request is supported." */
1918 kctl = snd_ctl_new1(&usb_bool_master_control_ctl_ro, cval);
cddaafb9
DM		 1919
1920 if (!kctl) {
52c3e317 1921 usb_mixer_elem_info_free(cval);
cddaafb9
DM		 1922 return -ENOMEM;
1923 }
1924
1925 kctl->private_free = snd_usb_mixer_elem_free;
eccfc1b8 1926 ret = snd_usb_copy_string_desc(state->chip, hdr->iClockSource,
cddaafb9
DM		 1927 name, sizeof(name));
1928 if (ret > 0)
1929 snprintf(kctl->id.name, sizeof(kctl->id.name),
1930 "%s Validity", name);
1931 else
1932 snprintf(kctl->id.name, sizeof(kctl->id.name),
1933 "Clock Source %d Validity", hdr->bClockID);
1934
1935 return snd_usb_mixer_add_control(&cval->head, kctl);
1936}
1937
1da177e4
LT		 1938/*
1939 * parse a feature unit
1940 *
25985edc 1941 * most of controls are defined here.
1da177e4 1942 */
6bc170e4
DM		 1943static int parse_audio_feature_unit(struct mixer_build *state, int unitid,
1944 void *_ftr)
1da177e4
LT		 1945{
1946 int channels, i, j;
86e07d34 1947 struct usb_audio_term iterm;
36c346e1 1948 unsigned int master_bits;
1da177e4 1949 int err, csize;
23caaf19
DM		 1950 struct uac_feature_unit_descriptor *hdr = _ftr;
1951 __u8 *bmaControls;
1952
1953 if (state->mixer->protocol == UAC_VERSION_1) {
1954 csize = hdr->bControlSize;
1955 channels = (hdr->bLength - 7) / csize - 1;
1956 bmaControls = hdr->bmaControls;
9a2fe9b8 1957 } else if (state->mixer->protocol == UAC_VERSION_2) {
23caaf19
DM		 1958 struct uac2_feature_unit_descriptor *ftr = _ftr;
1959 csize = 4;
e8d0fee7 1960 channels = (hdr->bLength - 6) / 4 - 1;
23caaf19 1961 bmaControls = ftr->bmaControls;
9a2fe9b8
RB		 1962 } else { /* UAC_VERSION_3 */
1963 struct uac3_feature_unit_descriptor *ftr = _ftr;
1964
9a2fe9b8
RB		 1965 csize = 4;
1966 channels = (ftr->bLength - 7) / 4 - 1;
1967 bmaControls = ftr->bmaControls;
1da177e4
LT		 1968 }
1969
1970 /* parse the source unit */
f25ecf8f
TI		 1971 err = parse_audio_unit(state, hdr->bSourceID);
1972 if (err < 0)
1da177e4
LT		 1973 return err;
1974
1975 /* determine the input source type and name */
4d7b86c9
DM		 1976 err = check_input_term(state, hdr->bSourceID, &iterm);
1977 if (err < 0)
1978 return err;
1da177e4 1979
23caaf19 1980 master_bits = snd_usb_combine_bytes(bmaControls, csize);
0c3cee57
JK		 1981 /* master configuration quirks */
1982 switch (state->chip->usb_id) {
1983 case USB_ID(0x08bb, 0x2702):
0ba41d91
TI		 1984 usb_audio_info(state->chip,
1985 "usbmixer: master volume quirk for PCM2702 chip\n");
0c3cee57 1986 /* disable non-functional volume control */
65f25da4 1987 master_bits &= ~UAC_CONTROL_BIT(UAC_FU_VOLUME);
0c3cee57 1988 break;
c1051439 1989 case USB_ID(0x1130, 0xf211):
0ba41d91
TI		 1990 usb_audio_info(state->chip,
1991 "usbmixer: volume control quirk for Tenx TP6911 Audio Headset\n");
c1051439
DH		 1992 /* disable non-functional volume control */
1993 channels = 0;
1994 break;
1995
0c3cee57 1996 }
23caaf19
DM		 1997
1998 if (state->mixer->protocol == UAC_VERSION_1) {
1999 /* check all control types */
2000 for (i = 0; i < 10; i++) {
2001 unsigned int ch_bits = 0;
21e9b3e9
AC		 2002 int control = audio_feature_info[i].control;
2003
23caaf19 2004 for (j = 0; j < channels; j++) {
6bc170e4
DM		 2005 unsigned int mask;
2006
2007 mask = snd_usb_combine_bytes(bmaControls +
2008 csize * (j+1), csize);
23caaf19
DM		 2009 if (mask & (1 << i))
2010 ch_bits |= (1 << j);
2011 }
2012 /* audio class v1 controls are never read-only */
6bc170e4
DM		 2013
2014 /*
2015 * The first channel must be set
2016 * (for ease of programming).
2017 */
2018 if (ch_bits & 1)
21e9b3e9 2019 build_feature_ctl(state, _ftr, ch_bits, control,
6bc170e4 2020 &iterm, unitid, 0);
23caaf19 2021 if (master_bits & (1 << i))
21e9b3e9
AC		 2022 build_feature_ctl(state, _ftr, 0, control,
2023 &iterm, unitid, 0);
23caaf19 2024 }
9a2fe9b8 2025 } else { /* UAC_VERSION_2/3 */
d09c06c6 2026 for (i = 0; i < ARRAY_SIZE(audio_feature_info); i++) {
23caaf19
DM		 2027 unsigned int ch_bits = 0;
2028 unsigned int ch_read_only = 0;
21e9b3e9 2029 int control = audio_feature_info[i].control;
23caaf19
DM		 2030
2031 for (j = 0; j < channels; j++) {
6bc170e4
DM		 2032 unsigned int mask;
2033
2034 mask = snd_usb_combine_bytes(bmaControls +
2035 csize * (j+1), csize);
21e9b3e9 2036 if (uac_v2v3_control_is_readable(mask, control)) {
23caaf19 2037 ch_bits |= (1 << j);
21e9b3e9 2038 if (!uac_v2v3_control_is_writeable(mask, control))
23caaf19
DM		 2039 ch_read_only |= (1 << j);
2040 }
2041 }
2042
6bc170e4
DM		 2043 /*
2044 * NOTE: build_feature_ctl() will mark the control
2045 * read-only if all channels are marked read-only in
2046 * the descriptors. Otherwise, the control will be
2047 * reported as writeable, but the driver will not
2048 * actually issue a write command for read-only
2049 * channels.
2050 */
2051
2052 /*
2053 * The first channel must be set
2054 * (for ease of programming).
2055 */
2056 if (ch_bits & 1)
21e9b3e9 2057 build_feature_ctl(state, _ftr, ch_bits, control,
6bc170e4 2058 &iterm, unitid, ch_read_only);
21e9b3e9 2059 if (uac_v2v3_control_is_readable(master_bits, control))
2de841ef
TI		 2060 build_feature_ctl(state, _ftr, 0, control,
2061 &iterm, unitid,
21e9b3e9
AC		 2062 !uac_v2v3_control_is_writeable(master_bits,
2063 control));
1da177e4 2064 }
1da177e4
LT		 2065 }
2066
2067 return 0;
2068}
2069
1da177e4
LT		 2070/*
2071 * Mixer Unit
2072 */
2073
f9f0e9ed
TI		 2074/* check whether the given in/out overflows bmMixerControls matrix */
2075static bool mixer_bitmap_overflow(struct uac_mixer_unit_descriptor *desc,
2076 int protocol, int num_ins, int num_outs)
2077{
2078 u8 *hdr = (u8 *)desc;
2079 u8 *c = uac_mixer_unit_bmControls(desc, protocol);
2080 size_t rest; /* remaining bytes after bmMixerControls */
2081
2082 switch (protocol) {
2083 case UAC_VERSION_1:
2084 default:
2085 rest = 1; /* iMixer */
2086 break;
2087 case UAC_VERSION_2:
2088 rest = 2; /* bmControls + iMixer */
2089 break;
2090 case UAC_VERSION_3:
2091 rest = 6; /* bmControls + wMixerDescrStr */
2092 break;
2093 }
2094
2095 /* overflow? */
2096 return c + (num_ins * num_outs + 7) / 8 + rest > hdr + hdr[0];
2097}
2098
1da177e4
LT		 2099/*
2100 * build a mixer unit control
2101 *
2102 * the callbacks are identical with feature unit.
2103 * input channel number (zero based) is given in control field instead.
2104 */
99fc8645
DM		 2105static void build_mixer_unit_ctl(struct mixer_build *state,
2106 struct uac_mixer_unit_descriptor *desc,
6cfd839a
JS		 2107 int in_pin, int in_ch, int num_outs,
2108 int unitid, struct usb_audio_term *iterm)
1da177e4 2109{
86e07d34 2110 struct usb_mixer_elem_info *cval;
1da177e4 2111 unsigned int i, len;
86e07d34 2112 struct snd_kcontrol *kctl;
c3a3e040 2113 const struct usbmix_name_map *map;
1da177e4 2114
17156f23 2115 map = find_map(state->map, unitid, 0);
c3a3e040 2116 if (check_ignored_ctl(map))
1da177e4
LT		 2117 return;
2118
561b220a 2119 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
6bc170e4 2120 if (!cval)
1da177e4
LT		 2121 return;
2122
3360b84b 2123 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
1da177e4
LT		 2124 cval->control = in_ch + 1; /* based on 1 */
2125 cval->val_type = USB_MIXER_S16;
2126 for (i = 0; i < num_outs; i++) {
6bc170e4
DM		 2127 __u8 *c = uac_mixer_unit_bmControls(desc, state->mixer->protocol);
2128
2129 if (check_matrix_bitmap(c, in_ch, i, num_outs)) {
1da177e4
LT		 2130 cval->cmask |= (1 << i);
2131 cval->channels++;
2132 }
2133 }
2134
2135 /* get min/max values */
2136 get_min_max(cval, 0);
2137
2138 kctl = snd_ctl_new1(&usb_feature_unit_ctl, cval);
6bc170e4 2139 if (!kctl) {
0ba41d91 2140 usb_audio_err(state->chip, "cannot malloc kcontrol\n");
52c3e317 2141 usb_mixer_elem_info_free(cval);
1da177e4
LT		 2142 return;
2143 }
eef90451 2144 kctl->private_free = snd_usb_mixer_elem_free;
1da177e4 2145
c3a3e040 2146 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
6bc170e4 2147 if (!len)
eccfc1b8 2148 len = get_term_name(state->chip, iterm, kctl->id.name,
6bc170e4
DM		 2149 sizeof(kctl->id.name), 0);
2150 if (!len)
1da177e4 2151 len = sprintf(kctl->id.name, "Mixer Source %d", in_ch + 1);
08d1e635 2152 append_ctl_name(kctl, " Volume");
1da177e4 2153
0ba41d91 2154 usb_audio_dbg(state->chip, "[%d] MU [%s] ch = %d, val = %d/%d\n",
3360b84b
TI		 2155 cval->head.id, kctl->id.name, cval->channels, cval->min, cval->max);
2156 snd_usb_mixer_add_control(&cval->head, kctl);
1da177e4
LT		 2157}
2158
5a222e84
AC		 2159static int parse_audio_input_terminal(struct mixer_build *state, int unitid,
2160 void *raw_desc)
2161{
2162 struct usb_audio_term iterm;
1d38f5d8 2163 unsigned int control, bmctls, term_id;
5a222e84 2164
5a222e84 2165 if (state->mixer->protocol == UAC_VERSION_2) {
1d38f5d8
JS		 2166 struct uac2_input_terminal_descriptor *d_v2 = raw_desc;
2167 control = UAC2_TE_CONNECTOR;
2168 term_id = d_v2->bTerminalID;
2169 bmctls = le16_to_cpu(d_v2->bmControls);
2170 } else if (state->mixer->protocol == UAC_VERSION_3) {
2171 struct uac3_input_terminal_descriptor *d_v3 = raw_desc;
2172 control = UAC3_TE_INSERTION;
2173 term_id = d_v3->bTerminalID;
2174 bmctls = le32_to_cpu(d_v3->bmControls);
2175 } else {
2176 return 0; /* UAC1. No Insertion control */
5a222e84 2177 }
1d38f5d8
JS		 2178
2179 check_input_term(state, term_id, &iterm);
2180
2181 /* Check for jack detection. */
7dc3c5a0
TI		 2182 if ((iterm.type & 0xff00) != 0x0100 &&
2183 uac_v2v3_control_is_readable(bmctls, control))
934b9659 2184 build_connector_control(state->mixer, state->map, &iterm, true);
1d38f5d8 2185
5a222e84
AC		 2186 return 0;
2187}
2188
1da177e4
LT		 2189/*
2190 * parse a mixer unit
2191 */
6bc170e4
DM		 2192static int parse_audio_mixer_unit(struct mixer_build *state, int unitid,
2193 void *raw_desc)
1da177e4 2194{
99fc8645 2195 struct uac_mixer_unit_descriptor *desc = raw_desc;
86e07d34 2196 struct usb_audio_term iterm;
1da177e4
LT		 2197 int input_pins, num_ins, num_outs;
2198 int pin, ich, err;
2199
6cfd839a
JS		 2200 err = uac_mixer_unit_get_channels(state, desc);
2201 if (err < 0) {
6bc170e4
DM		 2202 usb_audio_err(state->chip,
2203 "invalid MIXER UNIT descriptor %d\n",
2204 unitid);
6cfd839a 2205 return err;
1da177e4 2206 }
1da177e4 2207
6cfd839a
JS		 2208 num_outs = err;
2209 input_pins = desc->bNrInPins;
2210
1da177e4
LT		 2211 num_ins = 0;
2212 ich = 0;
2213 for (pin = 0; pin < input_pins; pin++) {
99fc8645 2214 err = parse_audio_unit(state, desc->baSourceID[pin]);
1da177e4 2215 if (err < 0)
284a8dd6 2216 continue;
ea114fc2 2217 /* no bmControls field (e.g. Maya44) -> ignore */
0bfe5e43 2218 if (!num_outs)
ea114fc2 2219 continue;
99fc8645 2220 err = check_input_term(state, desc->baSourceID[pin], &iterm);
1da177e4
LT		 2221 if (err < 0)
2222 return err;
2223 num_ins += iterm.channels;
f9f0e9ed
TI		 2224 if (mixer_bitmap_overflow(desc, state->mixer->protocol,
2225 num_ins, num_outs))
2226 break;
6bc170e4 2227 for (; ich < num_ins; ich++) {
1da177e4
LT		 2228 int och, ich_has_controls = 0;
2229
6bc170e4
DM		 2230 for (och = 0; och < num_outs; och++) {
2231 __u8 *c = uac_mixer_unit_bmControls(desc,
2232 state->mixer->protocol);
2233
2234 if (check_matrix_bitmap(c, ich, och, num_outs)) {
1da177e4
LT		 2235 ich_has_controls = 1;
2236 break;
2237 }
2238 }
2239 if (ich_has_controls)
6cfd839a 2240 build_mixer_unit_ctl(state, desc, pin, ich, num_outs,
1da177e4
LT		 2241 unitid, &iterm);
2242 }
2243 }
2244 return 0;
2245}
2246
1da177e4
LT		 2247/*
2248 * Processing Unit / Extension Unit
2249 */
2250
2251/* get callback for processing/extension unit */
6bc170e4
DM		 2252static int mixer_ctl_procunit_get(struct snd_kcontrol *kcontrol,
2253 struct snd_ctl_elem_value *ucontrol)
1da177e4 2254{
86e07d34 2255 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 2256 int err, val;
2257
2258 err = get_cur_ctl_value(cval, cval->control << 8, &val);
5aeee342 2259 if (err < 0) {
1da177e4 2260 ucontrol->value.integer.value[0] = cval->min;
5aeee342 2261 return filter_error(cval, err);
1da177e4 2262 }
1da177e4
LT		 2263 val = get_relative_value(cval, val);
2264 ucontrol->value.integer.value[0] = val;
2265 return 0;
2266}
2267
2268/* put callback for processing/extension unit */
6bc170e4
DM		 2269static int mixer_ctl_procunit_put(struct snd_kcontrol *kcontrol,
2270 struct snd_ctl_elem_value *ucontrol)
1da177e4 2271{
86e07d34 2272 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 2273 int val, oval, err;
2274
2275 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
5aeee342
TI		 2276 if (err < 0)
2277 return filter_error(cval, err);
1da177e4
LT		 2278 val = ucontrol->value.integer.value[0];
2279 val = get_abs_value(cval, val);
2280 if (val != oval) {
2281 set_cur_ctl_value(cval, cval->control << 8, val);
2282 return 1;
2283 }
2284 return 0;
2285}
2286
2287/* alsa control interface for processing/extension unit */
8fdaebbb 2288static const struct snd_kcontrol_new mixer_procunit_ctl = {
1da177e4
LT		 2289 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2290 .name = "", /* will be filled later */
2291 .info = mixer_ctl_feature_info,
2292 .get = mixer_ctl_procunit_get,
2293 .put = mixer_ctl_procunit_put,
2294};
2295
1da177e4
LT		 2296/*
2297 * predefined data for processing units
2298 */
2299struct procunit_value_info {
2300 int control;
a01df925 2301 const char *suffix;
1da177e4
LT		 2302 int val_type;
2303 int min_value;
2304};
2305
2306struct procunit_info {
2307 int type;
2308 char *name;
a01df925 2309 const struct procunit_value_info *values;
1da177e4
LT		 2310};
2311
a01df925 2312static const struct procunit_value_info undefined_proc_info[] = {
0f292f02
JS		 2313 { 0x00, "Control Undefined", 0 },
2314 { 0 }
2315};
2316
a01df925 2317static const struct procunit_value_info updown_proc_info[] = {
65f25da4
DM		 2318 { UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN },
2319 { UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
1da177e4
LT		 2320 { 0 }
2321};
a01df925 2322static const struct procunit_value_info prologic_proc_info[] = {
65f25da4
DM		 2323 { UAC_DP_ENABLE, "Switch", USB_MIXER_BOOLEAN },
2324 { UAC_DP_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
1da177e4
LT		 2325 { 0 }
2326};
a01df925 2327static const struct procunit_value_info threed_enh_proc_info[] = {
65f25da4
DM		 2328 { UAC_3D_ENABLE, "Switch", USB_MIXER_BOOLEAN },
2329 { UAC_3D_SPACE, "Spaciousness", USB_MIXER_U8 },
1da177e4
LT		 2330 { 0 }
2331};
a01df925 2332static const struct procunit_value_info reverb_proc_info[] = {
65f25da4
DM		 2333 { UAC_REVERB_ENABLE, "Switch", USB_MIXER_BOOLEAN },
2334 { UAC_REVERB_LEVEL, "Level", USB_MIXER_U8 },
2335 { UAC_REVERB_TIME, "Time", USB_MIXER_U16 },
2336 { UAC_REVERB_FEEDBACK, "Feedback", USB_MIXER_U8 },
1da177e4
LT		 2337 { 0 }
2338};
a01df925 2339static const struct procunit_value_info chorus_proc_info[] = {
65f25da4
DM		 2340 { UAC_CHORUS_ENABLE, "Switch", USB_MIXER_BOOLEAN },
2341 { UAC_CHORUS_LEVEL, "Level", USB_MIXER_U8 },
2342 { UAC_CHORUS_RATE, "Rate", USB_MIXER_U16 },
2343 { UAC_CHORUS_DEPTH, "Depth", USB_MIXER_U16 },
1da177e4
LT		 2344 { 0 }
2345};
a01df925 2346static const struct procunit_value_info dcr_proc_info[] = {
65f25da4
DM		 2347 { UAC_DCR_ENABLE, "Switch", USB_MIXER_BOOLEAN },
2348 { UAC_DCR_RATE, "Ratio", USB_MIXER_U16 },
2349 { UAC_DCR_MAXAMPL, "Max Amp", USB_MIXER_S16 },
2350 { UAC_DCR_THRESHOLD, "Threshold", USB_MIXER_S16 },
2351 { UAC_DCR_ATTACK_TIME, "Attack Time", USB_MIXER_U16 },
2352 { UAC_DCR_RELEASE_TIME, "Release Time", USB_MIXER_U16 },
1da177e4
LT		 2353 { 0 }
2354};
2355
a01df925 2356static const struct procunit_info procunits[] = {
65f25da4
DM		 2357 { UAC_PROCESS_UP_DOWNMIX, "Up Down", updown_proc_info },
2358 { UAC_PROCESS_DOLBY_PROLOGIC, "Dolby Prologic", prologic_proc_info },
2359 { UAC_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", threed_enh_proc_info },
2360 { UAC_PROCESS_REVERB, "Reverb", reverb_proc_info },
2361 { UAC_PROCESS_CHORUS, "Chorus", chorus_proc_info },
2362 { UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info },
1da177e4
LT		 2363 { 0 },
2364};
0f292f02 2365
a01df925 2366static const struct procunit_value_info uac3_updown_proc_info[] = {
0f292f02
JS		 2367 { UAC3_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
2368 { 0 }
2369};
a01df925 2370static const struct procunit_value_info uac3_stereo_ext_proc_info[] = {
0f292f02
JS		 2371 { UAC3_EXT_WIDTH_CONTROL, "Width Control", USB_MIXER_U8 },
2372 { 0 }
2373};
2374
a01df925 2375static const struct procunit_info uac3_procunits[] = {
0f292f02
JS		 2376 { UAC3_PROCESS_UP_DOWNMIX, "Up Down", uac3_updown_proc_info },
2377 { UAC3_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", uac3_stereo_ext_proc_info },
2378 { UAC3_PROCESS_MULTI_FUNCTION, "Multi-Function", undefined_proc_info },
2379 { 0 },
2380};
2381
7d2b451e
SK		 2382/*
2383 * predefined data for extension units
2384 */
a01df925 2385static const struct procunit_value_info clock_rate_xu_info[] = {
e213e9cf
DM		 2386 { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
2387 { 0 }
7d2b451e 2388};
a01df925 2389static const struct procunit_value_info clock_source_xu_info[] = {
7d2b451e
SK		 2390 { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
2391 { 0 }
2392};
a01df925 2393static const struct procunit_value_info spdif_format_xu_info[] = {
7d2b451e
SK		 2394 { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
2395 { 0 }
2396};
a01df925 2397static const struct procunit_value_info soft_limit_xu_info[] = {
7d2b451e
SK		 2398 { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
2399 { 0 }
2400};
a01df925 2401static const struct procunit_info extunits[] = {
7d2b451e
SK		 2402 { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
2403 { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
2404 { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
2405 { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
2406 { 0 }
2407};
6bc170e4 2408
1da177e4
LT		 2409/*
2410 * build a processing/extension unit
2411 */
6bc170e4 2412static int build_audio_procunit(struct mixer_build *state, int unitid,
a01df925 2413 void *raw_desc, const struct procunit_info *list,
ca95c7bf 2414 bool extension_unit)
1da177e4 2415{
99fc8645 2416 struct uac_processing_unit_descriptor *desc = raw_desc;
f4351a19 2417 int num_ins;
86e07d34
TI		 2418 struct usb_mixer_elem_info *cval;
2419 struct snd_kcontrol *kctl;
d8d0db7b 2420 int i, err, nameid, type, len, val;
a01df925
TI		 2421 const struct procunit_info *info;
2422 const struct procunit_value_info *valinfo;
c3a3e040 2423 const struct usbmix_name_map *map;
a01df925 2424 static const struct procunit_value_info default_value_info[] = {
1da177e4
LT		 2425 { 0x01, "Switch", USB_MIXER_BOOLEAN },
2426 { 0 }
2427 };
a01df925 2428 static const struct procunit_info default_info = {
1da177e4
LT		 2429 0, NULL, default_value_info
2430 };
ca95c7bf
TI		 2431 const char *name = extension_unit ?
2432 "Extension Unit" : "Processing Unit";
1da177e4 2433
f4351a19 2434 num_ins = desc->bNrInPins;
1da177e4 2435 for (i = 0; i < num_ins; i++) {
f25ecf8f
TI		 2436 err = parse_audio_unit(state, desc->baSourceID[i]);
2437 if (err < 0)
1da177e4
LT		 2438 return err;
2439 }
2440
99fc8645 2441 type = le16_to_cpu(desc->wProcessType);
1da177e4
LT		 2442 for (info = list; info && info->type; info++)
2443 if (info->type == type)
2444 break;
6bc170e4 2445 if (!info || !info->type)
1da177e4
LT		 2446 info = &default_info;
2447
2448 for (valinfo = info->values; valinfo->control; valinfo++) {
23caaf19 2449 __u8 *controls = uac_processing_unit_bmControls(desc, state->mixer->protocol);
99fc8645 2450
4e887af3
JS		 2451 if (state->mixer->protocol == UAC_VERSION_1) {
2452 if (!(controls[valinfo->control / 8] &
2453 (1 << ((valinfo->control % 8) - 1))))
2454 continue;
2455 } else { /* UAC_VERSION_2/3 */
2456 if (!uac_v2v3_control_is_readable(controls[valinfo->control / 8],
2457 valinfo->control))
2458 continue;
2459 }
2460
17156f23 2461 map = find_map(state->map, unitid, valinfo->control);
c3a3e040 2462 if (check_ignored_ctl(map))
1da177e4 2463 continue;
561b220a 2464 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
a860d95f 2465 if (!cval)
1da177e4 2466 return -ENOMEM;
3360b84b 2467 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
1da177e4
LT		 2468 cval->control = valinfo->control;
2469 cval->val_type = valinfo->val_type;
2470 cval->channels = 1;
2471
4e887af3
JS		 2472 if (state->mixer->protocol > UAC_VERSION_1 &&
2473 !uac_v2v3_control_is_writeable(controls[valinfo->control / 8],
2474 valinfo->control))
2475 cval->master_readonly = 1;
2476
1da177e4 2477 /* get min/max values */
55b8cb46
JS		 2478 switch (type) {
2479 case UAC_PROCESS_UP_DOWNMIX: {
2480 bool mode_sel = false;
2481
2482 switch (state->mixer->protocol) {
2483 case UAC_VERSION_1:
2484 case UAC_VERSION_2:
2485 default:
2486 if (cval->control == UAC_UD_MODE_SELECT)
2487 mode_sel = true;
2488 break;
2489 case UAC_VERSION_3:
2490 if (cval->control == UAC3_UD_MODE_SELECT)
2491 mode_sel = true;
2492 break;
2493 }
2494
2495 if (mode_sel) {
2496 __u8 *control_spec = uac_processing_unit_specific(desc,
2497 state->mixer->protocol);
2498 cval->min = 1;
2499 cval->max = control_spec[0];
7d2b451e
SK		 2500 cval->res = 1;
2501 cval->initialized = 1;
55b8cb46
JS		 2502 break;
2503 }
2504
2505 get_min_max(cval, valinfo->min_value);
2506 break;
2507 }
2508 case USB_XU_CLOCK_RATE:
2509 /*
2510 * E-Mu USB 0404/0202/TrackerPre/0204
2511 * samplerate control quirk
2512 */
2513 cval->min = 0;
2514 cval->max = 5;
2515 cval->res = 1;
2516 cval->initialized = 1;
2517 break;
2518 default:
2519 get_min_max(cval, valinfo->min_value);
2520 break;
7d2b451e 2521 }
1da177e4 2522
d8d0db7b
TY		 2523 err = get_cur_ctl_value(cval, cval->control << 8, &val);
2524 if (err < 0) {
2525 usb_mixer_elem_info_free(cval);
2526 return -EINVAL;
2527 }
2528
1da177e4 2529 kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
6bc170e4 2530 if (!kctl) {
52c3e317 2531 usb_mixer_elem_info_free(cval);
1da177e4
LT		 2532 return -ENOMEM;
2533 }
eef90451 2534 kctl->private_free = snd_usb_mixer_elem_free;
1da177e4 2535
6bc170e4 2536 if (check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name))) {
c3a3e040 2537 /* nothing */ ;
6bc170e4 2538 } else if (info->name) {
75b1a8f9 2539 strscpy(kctl->id.name, info->name, sizeof(kctl->id.name));
6bc170e4 2540 } else {
ca95c7bf
TI		 2541 if (extension_unit)
2542 nameid = uac_extension_unit_iExtension(desc, state->mixer->protocol);
2543 else
2544 nameid = uac_processing_unit_iProcessing(desc, state->mixer->protocol);
1da177e4
LT		 2545 len = 0;
2546 if (nameid)
eccfc1b8
RB		 2547 len = snd_usb_copy_string_desc(state->chip,
2548 nameid,
6bc170e4
DM		 2549 kctl->id.name,
2550 sizeof(kctl->id.name));
2551 if (!len)
75b1a8f9 2552 strscpy(kctl->id.name, name, sizeof(kctl->id.name));
1da177e4 2553 }
08d1e635
TI		 2554 append_ctl_name(kctl, " ");
2555 append_ctl_name(kctl, valinfo->suffix);
1da177e4 2556
0ba41d91 2557 usb_audio_dbg(state->chip,
6bc170e4 2558 "[%d] PU [%s] ch = %d, val = %d/%d\n",
3360b84b 2559 cval->head.id, kctl->id.name, cval->channels,
6bc170e4
DM		 2560 cval->min, cval->max);
2561
3360b84b 2562 err = snd_usb_mixer_add_control(&cval->head, kctl);
6bc170e4 2563 if (err < 0)
1da177e4
LT		 2564 return err;
2565 }
2566 return 0;
2567}
2568
6bc170e4
DM		 2569static int parse_audio_processing_unit(struct mixer_build *state, int unitid,
2570 void *raw_desc)
1da177e4 2571{
0f292f02
JS		 2572 switch (state->mixer->protocol) {
2573 case UAC_VERSION_1:
2574 case UAC_VERSION_2:
2575 default:
2576 return build_audio_procunit(state, unitid, raw_desc,
ca95c7bf 2577 procunits, false);
0f292f02
JS		 2578 case UAC_VERSION_3:
2579 return build_audio_procunit(state, unitid, raw_desc,
ca95c7bf 2580 uac3_procunits, false);
0f292f02 2581 }
1da177e4
LT		 2582}
2583
6bc170e4
DM		 2584static int parse_audio_extension_unit(struct mixer_build *state, int unitid,
2585 void *raw_desc)
1da177e4 2586{
6bc170e4
DM		 2587 /*
2588 * Note that we parse extension units with processing unit descriptors.
2589 * That's ok as the layout is the same.
2590 */
ca95c7bf 2591 return build_audio_procunit(state, unitid, raw_desc, extunits, true);
1da177e4
LT		 2592}
2593
1da177e4
LT		 2594/*
2595 * Selector Unit
2596 */
2597
6bc170e4
DM		 2598/*
2599 * info callback for selector unit
1da177e4
LT		 2600 * use an enumerator type for routing
2601 */
6bc170e4
DM		 2602static int mixer_ctl_selector_info(struct snd_kcontrol *kcontrol,
2603 struct snd_ctl_elem_info *uinfo)
1da177e4 2604{
86e07d34 2605 struct usb_mixer_elem_info *cval = kcontrol->private_data;
2a1803a7 2606 const char **itemlist = (const char **)kcontrol->private_value;
1da177e4 2607
5e246b85
TI		 2608 if (snd_BUG_ON(!itemlist))
2609 return -EINVAL;
2a1803a7 2610 return snd_ctl_enum_info(uinfo, 1, cval->max, itemlist);
1da177e4
LT		 2611}
2612
2613/* get callback for selector unit */
6bc170e4
DM		 2614static int mixer_ctl_selector_get(struct snd_kcontrol *kcontrol,
2615 struct snd_ctl_elem_value *ucontrol)
1da177e4 2616{
86e07d34 2617 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 2618 int val, err;
2619
09414207 2620 err = get_cur_ctl_value(cval, cval->control << 8, &val);
1da177e4 2621 if (err < 0) {
5aeee342
TI		 2622 ucontrol->value.enumerated.item[0] = 0;
2623 return filter_error(cval, err);
1da177e4
LT		 2624 }
2625 val = get_relative_value(cval, val);
2626 ucontrol->value.enumerated.item[0] = val;
2627 return 0;
2628}
2629
2630/* put callback for selector unit */
6bc170e4
DM		 2631static int mixer_ctl_selector_put(struct snd_kcontrol *kcontrol,
2632 struct snd_ctl_elem_value *ucontrol)
1da177e4 2633{
86e07d34 2634 struct usb_mixer_elem_info *cval = kcontrol->private_data;
1da177e4
LT		 2635 int val, oval, err;
2636
09414207 2637 err = get_cur_ctl_value(cval, cval->control << 8, &oval);
5aeee342
TI		 2638 if (err < 0)
2639 return filter_error(cval, err);
1da177e4
LT		 2640 val = ucontrol->value.enumerated.item[0];
2641 val = get_abs_value(cval, val);
2642 if (val != oval) {
09414207 2643 set_cur_ctl_value(cval, cval->control << 8, val);
1da177e4
LT		 2644 return 1;
2645 }
2646 return 0;
2647}
2648
2649/* alsa control interface for selector unit */
8fdaebbb 2650static const struct snd_kcontrol_new mixer_selectunit_ctl = {
1da177e4
LT		 2651 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
2652 .name = "", /* will be filled later */
2653 .info = mixer_ctl_selector_info,
2654 .get = mixer_ctl_selector_get,
2655 .put = mixer_ctl_selector_put,
2656};
2657
6bc170e4
DM		 2658/*
2659 * private free callback.
1da177e4
LT		 2660 * free both private_data and private_value
2661 */
86e07d34 2662static void usb_mixer_selector_elem_free(struct snd_kcontrol *kctl)
1da177e4
LT		 2663{
2664 int i, num_ins = 0;
2665
2666 if (kctl->private_data) {
86e07d34 2667 struct usb_mixer_elem_info *cval = kctl->private_data;
1da177e4 2668 num_ins = cval->max;
52c3e317 2669 usb_mixer_elem_info_free(cval);
1da177e4
LT		 2670 kctl->private_data = NULL;
2671 }
2672 if (kctl->private_value) {
2673 char **itemlist = (char **)kctl->private_value;
2674 for (i = 0; i < num_ins; i++)
2675 kfree(itemlist[i]);
2676 kfree(itemlist);
2677 kctl->private_value = 0;
2678 }
2679}
2680
2681/*
2682 * parse a selector unit
2683 */
6bc170e4
DM		 2684static int parse_audio_selector_unit(struct mixer_build *state, int unitid,
2685 void *raw_desc)
1da177e4 2686{
99fc8645 2687 struct uac_selector_unit_descriptor *desc = raw_desc;
1da177e4
LT		 2688 unsigned int i, nameid, len;
2689 int err;
86e07d34
TI		 2690 struct usb_mixer_elem_info *cval;
2691 struct snd_kcontrol *kctl;
c3a3e040 2692 const struct usbmix_name_map *map;
1da177e4
LT		 2693 char **namelist;
2694
99fc8645 2695 for (i = 0; i < desc->bNrInPins; i++) {
f25ecf8f
TI		 2696 err = parse_audio_unit(state, desc->baSourceID[i]);
2697 if (err < 0)
1da177e4
LT		 2698 return err;
2699 }
2700
99fc8645 2701 if (desc->bNrInPins == 1) /* only one ? nonsense! */
1da177e4
LT		 2702 return 0;
2703
17156f23 2704 map = find_map(state->map, unitid, 0);
c3a3e040 2705 if (check_ignored_ctl(map))
1da177e4
LT		 2706 return 0;
2707
561b220a 2708 cval = kzalloc(sizeof(*cval), GFP_KERNEL);
a860d95f 2709 if (!cval)
1da177e4 2710 return -ENOMEM;
3360b84b 2711 snd_usb_mixer_elem_init_std(&cval->head, state->mixer, unitid);
1da177e4
LT		 2712 cval->val_type = USB_MIXER_U8;
2713 cval->channels = 1;
2714 cval->min = 1;
99fc8645 2715 cval->max = desc->bNrInPins;
1da177e4
LT		 2716 cval->res = 1;
2717 cval->initialized = 1;
2718
c77e1ef1
JS		 2719 switch (state->mixer->protocol) {
2720 case UAC_VERSION_1:
2721 default:
09414207 2722 cval->control = 0;
c77e1ef1
JS		 2723 break;
2724 case UAC_VERSION_2:
2725 case UAC_VERSION_3:
2726 if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR ||
2727 desc->bDescriptorSubtype == UAC3_CLOCK_SELECTOR)
2728 cval->control = UAC2_CX_CLOCK_SELECTOR;
2729 else /* UAC2/3_SELECTOR_UNIT */
2730 cval->control = UAC2_SU_SELECTOR;
2731 break;
2732 }
09414207 2733
52c3e317 2734 namelist = kcalloc(desc->bNrInPins, sizeof(char *), GFP_KERNEL);
6bc170e4 2735 if (!namelist) {
52c3e317
TI		 2736 err = -ENOMEM;
2737 goto error_cval;
1da177e4
LT		 2738 }
2739#define MAX_ITEM_NAME_LEN 64
99fc8645 2740 for (i = 0; i < desc->bNrInPins; i++) {
86e07d34 2741 struct usb_audio_term iterm;
1da177e4 2742 namelist[i] = kmalloc(MAX_ITEM_NAME_LEN, GFP_KERNEL);
6bc170e4 2743 if (!namelist[i]) {
52c3e317
TI		 2744 err = -ENOMEM;
2745 goto error_name;
1da177e4 2746 }
8e062ec7
CL		 2747 len = check_mapped_selector_name(state, unitid, i, namelist[i],
2748 MAX_ITEM_NAME_LEN);
99fc8645 2749 if (! len && check_input_term(state, desc->baSourceID[i], &iterm) >= 0)
eccfc1b8
RB		 2750 len = get_term_name(state->chip, &iterm, namelist[i],
2751 MAX_ITEM_NAME_LEN, 0);
1da177e4 2752 if (! len)
af831eef 2753 sprintf(namelist[i], "Input %u", i);
1da177e4
LT		 2754 }
2755
2756 kctl = snd_ctl_new1(&mixer_selectunit_ctl, cval);
2757 if (! kctl) {
0ba41d91 2758 usb_audio_err(state->chip, "cannot malloc kcontrol\n");
52c3e317
TI		 2759 err = -ENOMEM;
2760 goto error_name;
1da177e4
LT		 2761 }
2762 kctl->private_value = (unsigned long)namelist;
2763 kctl->private_free = usb_mixer_selector_elem_free;
2764
5a15f289 2765 /* check the static mapping table at first */
c3a3e040 2766 len = check_mapped_name(map, kctl->id.name, sizeof(kctl->id.name));
89b89d12 2767 if (!len) {
5a15f289 2768 /* no mapping ? */
c77e1ef1
JS		 2769 switch (state->mixer->protocol) {
2770 case UAC_VERSION_1:
2771 case UAC_VERSION_2:
2772 default:
5a15f289 2773 /* if iSelector is given, use it */
c77e1ef1
JS		 2774 nameid = uac_selector_unit_iSelector(desc);
2775 if (nameid)
2776 len = snd_usb_copy_string_desc(state->chip,
2777 nameid, kctl->id.name,
2778 sizeof(kctl->id.name));
2779 break;
2780 case UAC_VERSION_3:
2781 /* TODO: Class-Specific strings not yet supported */
2782 break;
2783 }
2784
5a15f289
TI		 2785 /* ... or pick up the terminal name at next */
2786 if (!len)
eccfc1b8 2787 len = get_term_name(state->chip, &state->oterm,
1da177e4 2788 kctl->id.name, sizeof(kctl->id.name), 0);
5a15f289 2789 /* ... or use the fixed string "USB" as the last resort */
6bc170e4 2790 if (!len)
75b1a8f9 2791 strscpy(kctl->id.name, "USB", sizeof(kctl->id.name));
1da177e4 2792
5a15f289 2793 /* and add the proper suffix */
c77e1ef1
JS		 2794 if (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR ||
2795 desc->bDescriptorSubtype == UAC3_CLOCK_SELECTOR)
09414207
DM		 2796 append_ctl_name(kctl, " Clock Source");
2797 else if ((state->oterm.type & 0xff00) == 0x0100)
08d1e635 2798 append_ctl_name(kctl, " Capture Source");
1da177e4 2799 else
08d1e635 2800 append_ctl_name(kctl, " Playback Source");
1da177e4
LT		 2801 }
2802
0ba41d91 2803 usb_audio_dbg(state->chip, "[%d] SU [%s] items = %d\n",
3360b84b
TI		 2804 cval->head.id, kctl->id.name, desc->bNrInPins);
2805 return snd_usb_mixer_add_control(&cval->head, kctl);
52c3e317
TI		 2806
2807 error_name:
2808 for (i = 0; i < desc->bNrInPins; i++)
2809 kfree(namelist[i]);
2810 kfree(namelist);
2811 error_cval:
2812 usb_mixer_elem_info_free(cval);
2813 return err;
1da177e4
LT		 2814}
2815
1da177e4
LT		 2816/*
2817 * parse an audio unit recursively
2818 */
2819
86e07d34 2820static int parse_audio_unit(struct mixer_build *state, int unitid)
1da177e4
LT		 2821{
2822 unsigned char *p1;
9a2fe9b8 2823 int protocol = state->mixer->protocol;
1da177e4
LT		 2824
2825 if (test_and_set_bit(unitid, state->unitbitmap))
2826 return 0; /* the unit already visited */
2827
2828 p1 = find_audio_control_unit(state, unitid);
2829 if (!p1) {
0ba41d91 2830 usb_audio_err(state->chip, "unit %d not found!\n", unitid);
1da177e4
LT		 2831 return -EINVAL;
2832 }
2833
57f87706
TI		 2834 if (!snd_usb_validate_audio_desc(p1, protocol)) {
2835 usb_audio_dbg(state->chip, "invalid unit %d\n", unitid);
2836 return 0; /* skip invalid unit */
2837 }
2838
68e9fde2
TI		 2839 switch (PTYPE(protocol, p1[2])) {
2840 case PTYPE(UAC_VERSION_1, UAC_INPUT_TERMINAL):
2841 case PTYPE(UAC_VERSION_2, UAC_INPUT_TERMINAL):
2842 case PTYPE(UAC_VERSION_3, UAC_INPUT_TERMINAL):
2843 return parse_audio_input_terminal(state, unitid, p1);
2844 case PTYPE(UAC_VERSION_1, UAC_MIXER_UNIT):
2845 case PTYPE(UAC_VERSION_2, UAC_MIXER_UNIT):
2846 case PTYPE(UAC_VERSION_3, UAC3_MIXER_UNIT):
2847 return parse_audio_mixer_unit(state, unitid, p1);
2848 case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SOURCE):
2849 case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SOURCE):
2850 return parse_clock_source_unit(state, unitid, p1);
2851 case PTYPE(UAC_VERSION_1, UAC_SELECTOR_UNIT):
2852 case PTYPE(UAC_VERSION_2, UAC_SELECTOR_UNIT):
2853 case PTYPE(UAC_VERSION_3, UAC3_SELECTOR_UNIT):
2854 case PTYPE(UAC_VERSION_2, UAC2_CLOCK_SELECTOR):
2855 case PTYPE(UAC_VERSION_3, UAC3_CLOCK_SELECTOR):
2856 return parse_audio_selector_unit(state, unitid, p1);
2857 case PTYPE(UAC_VERSION_1, UAC_FEATURE_UNIT):
2858 case PTYPE(UAC_VERSION_2, UAC_FEATURE_UNIT):
2859 case PTYPE(UAC_VERSION_3, UAC3_FEATURE_UNIT):
2860 return parse_audio_feature_unit(state, unitid, p1);
2861 case PTYPE(UAC_VERSION_1, UAC1_PROCESSING_UNIT):
2862 case PTYPE(UAC_VERSION_2, UAC2_PROCESSING_UNIT_V2):
2863 case PTYPE(UAC_VERSION_3, UAC3_PROCESSING_UNIT):
2864 return parse_audio_processing_unit(state, unitid, p1);
2865 case PTYPE(UAC_VERSION_1, UAC1_EXTENSION_UNIT):
2866 case PTYPE(UAC_VERSION_2, UAC2_EXTENSION_UNIT_V2):
2867 case PTYPE(UAC_VERSION_3, UAC3_EXTENSION_UNIT):
2868 return parse_audio_extension_unit(state, unitid, p1);
2869 case PTYPE(UAC_VERSION_2, UAC2_EFFECT_UNIT):
2870 case PTYPE(UAC_VERSION_3, UAC3_EFFECT_UNIT):
2871 return 0; /* FIXME - effect units not implemented yet */
2872 default:
2873 usb_audio_err(state->chip,
2874 "unit %u: unexpected type 0x%02x\n",
2875 unitid, p1[2]);
2876 return -EINVAL;
1da177e4
LT		 2877 }
2878}
2879
84957a8a
CL		 2880static void snd_usb_mixer_free(struct usb_mixer_interface *mixer)
2881{
124751d5
TI		 2882 /* kill pending URBs */
2883 snd_usb_mixer_disconnect(mixer);
2884
6639b6c2
CL		 2885 kfree(mixer->id_elems);
2886 if (mixer->urb) {
2887 kfree(mixer->urb->transfer_buffer);
2888 usb_free_urb(mixer->urb);
2889 }
68df9de1 2890 usb_free_urb(mixer->rc_urb);
b259b10c 2891 kfree(mixer->rc_setup_packet);
84957a8a
CL		 2892 kfree(mixer);
2893}
2894
86e07d34 2895static int snd_usb_mixer_dev_free(struct snd_device *device)
84957a8a
CL		 2896{
2897 struct usb_mixer_interface *mixer = device->device_data;
2898 snd_usb_mixer_free(mixer);
2899 return 0;
2900}
2901
17156f23
RB		 2902/* UAC3 predefined channels configuration */
2903struct uac3_badd_profile {
2904 int subclass;
2905 const char *name;
2906 int c_chmask; /* capture channels mask */
2907 int p_chmask; /* playback channels mask */
2908 int st_chmask; /* side tone mixing channel mask */
2909};
2910
a01df925 2911static const struct uac3_badd_profile uac3_badd_profiles[] = {
17156f23
RB		 2912 {
2913 /*
2914 * BAIF, BAOF or combination of both
2915 * IN: Mono or Stereo cfg, Mono alt possible
2916 * OUT: Mono or Stereo cfg, Mono alt possible
2917 */
2918 .subclass = UAC3_FUNCTION_SUBCLASS_GENERIC_IO,
2919 .name = "GENERIC IO",
2920 .c_chmask = -1, /* dynamic channels */
2921 .p_chmask = -1, /* dynamic channels */
2922 },
2923 {
2924 /* BAOF; Stereo only cfg, Mono alt possible */
2925 .subclass = UAC3_FUNCTION_SUBCLASS_HEADPHONE,
2926 .name = "HEADPHONE",
2927 .p_chmask = 3,
2928 },
2929 {
2930 /* BAOF; Mono or Stereo cfg, Mono alt possible */
2931 .subclass = UAC3_FUNCTION_SUBCLASS_SPEAKER,
2932 .name = "SPEAKER",
2933 .p_chmask = -1, /* dynamic channels */
2934 },
2935 {
2936 /* BAIF; Mono or Stereo cfg, Mono alt possible */
2937 .subclass = UAC3_FUNCTION_SUBCLASS_MICROPHONE,
2938 .name = "MICROPHONE",
2939 .c_chmask = -1, /* dynamic channels */
2940 },
2941 {
2942 /*
2943 * BAIOF topology
2944 * IN: Mono only
2945 * OUT: Mono or Stereo cfg, Mono alt possible
2946 */
2947 .subclass = UAC3_FUNCTION_SUBCLASS_HEADSET,
2948 .name = "HEADSET",
2949 .c_chmask = 1,
2950 .p_chmask = -1, /* dynamic channels */
2951 .st_chmask = 1,
2952 },
2953 {
2954 /* BAIOF; IN: Mono only; OUT: Stereo only, Mono alt possible */
2955 .subclass = UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER,
2956 .name = "HEADSET ADAPTER",
2957 .c_chmask = 1,
2958 .p_chmask = 3,
2959 .st_chmask = 1,
2960 },
2961 {
2962 /* BAIF + BAOF; IN: Mono only; OUT: Mono only */
2963 .subclass = UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE,
2964 .name = "SPEAKERPHONE",
2965 .c_chmask = 1,
2966 .p_chmask = 1,
2967 },
2968 { 0 } /* terminator */
2969};
2970
2971static bool uac3_badd_func_has_valid_channels(struct usb_mixer_interface *mixer,
a01df925 2972 const struct uac3_badd_profile *f,
17156f23
RB		 2973 int c_chmask, int p_chmask)
2974{
2975 /*
2976 * If both playback/capture channels are dynamic, make sure
2977 * at least one channel is present
2978 */
2979 if (f->c_chmask < 0 && f->p_chmask < 0) {
2980 if (!c_chmask && !p_chmask) {
2981 usb_audio_warn(mixer->chip, "BAAD %s: no channels?",
2982 f->name);
2983 return false;
2984 }
2985 return true;
2986 }
2987
2988 if ((f->c_chmask < 0 && !c_chmask) ||
2989 (f->c_chmask >= 0 && f->c_chmask != c_chmask)) {
2990 usb_audio_warn(mixer->chip, "BAAD %s c_chmask mismatch",
2991 f->name);
2992 return false;
2993 }
2994 if ((f->p_chmask < 0 && !p_chmask) ||
2995 (f->p_chmask >= 0 && f->p_chmask != p_chmask)) {
2996 usb_audio_warn(mixer->chip, "BAAD %s p_chmask mismatch",
2997 f->name);
2998 return false;
2999 }
3000 return true;
3001}
3002
3003/*
3004 * create mixer controls for UAC3 BADD profiles
3005 *
3006 * UAC3 BADD device doesn't contain CS descriptors thus we will guess everything
3007 *
3008 * BADD device may contain Mixer Unit, which doesn't have any controls, skip it
3009 */
3010static int snd_usb_mixer_controls_badd(struct usb_mixer_interface *mixer,
3011 int ctrlif)
3012{
3013 struct usb_device *dev = mixer->chip->dev;
3014 struct usb_interface_assoc_descriptor *assoc;
3015 int badd_profile = mixer->chip->badd_profile;
a01df925 3016 const struct uac3_badd_profile *f;
17156f23
RB		 3017 const struct usbmix_ctl_map *map;
3018 int p_chmask = 0, c_chmask = 0, st_chmask = 0;
3019 int i;
3020
3021 assoc = usb_ifnum_to_if(dev, ctrlif)->intf_assoc;
3022
3023 /* Detect BADD capture/playback channels from AS EP descriptors */
3024 for (i = 0; i < assoc->bInterfaceCount; i++) {
3025 int intf = assoc->bFirstInterface + i;
3026
3027 struct usb_interface *iface;
3028 struct usb_host_interface *alts;
3029 struct usb_interface_descriptor *altsd;
3030 unsigned int maxpacksize;
3031 char dir_in;
3032 int chmask, num;
3033
3034 if (intf == ctrlif)
3035 continue;
3036
3037 iface = usb_ifnum_to_if(dev, intf);
9435f2bb
TI		 3038 if (!iface)
3039 continue;
3040
17156f23
RB		 3041 num = iface->num_altsetting;
3042
3043 if (num < 2)
3044 return -EINVAL;
3045
3046 /*
3047 * The number of Channels in an AudioStreaming interface
3048 * and the audio sample bit resolution (16 bits or 24
3049 * bits) can be derived from the wMaxPacketSize field in
3050 * the Standard AS Audio Data Endpoint descriptor in
3051 * Alternate Setting 1
3052 */
3053 alts = &iface->altsetting[1];
3054 altsd = get_iface_desc(alts);
3055
3056 if (altsd->bNumEndpoints < 1)
3057 return -EINVAL;
3058
3059 /* check direction */
3060 dir_in = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN);
3061 maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3062
3063 switch (maxpacksize) {
3064 default:
3065 usb_audio_err(mixer->chip,
3066 "incorrect wMaxPacketSize 0x%x for BADD profile\n",
3067 maxpacksize);
3068 return -EINVAL;
3069 case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_16:
3070 case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_16:
3071 case UAC3_BADD_EP_MAXPSIZE_SYNC_MONO_24:
3072 case UAC3_BADD_EP_MAXPSIZE_ASYNC_MONO_24:
3073 chmask = 1;
3074 break;
3075 case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_16:
3076 case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_16:
3077 case UAC3_BADD_EP_MAXPSIZE_SYNC_STEREO_24:
3078 case UAC3_BADD_EP_MAXPSIZE_ASYNC_STEREO_24:
3079 chmask = 3;
3080 break;
3081 }
3082
3083 if (dir_in)
3084 c_chmask = chmask;
3085 else
3086 p_chmask = chmask;
3087 }
3088
3089 usb_audio_dbg(mixer->chip,
3090 "UAC3 BADD profile 0x%x: detected c_chmask=%d p_chmask=%d\n",
3091 badd_profile, c_chmask, p_chmask);
3092
3093 /* check the mapping table */
3094 for (map = uac3_badd_usbmix_ctl_maps; map->id; map++) {
3095 if (map->id == badd_profile)
3096 break;
3097 }
3098
3099 if (!map->id)
3100 return -EINVAL;
3101
3102 for (f = uac3_badd_profiles; f->name; f++) {
3103 if (badd_profile == f->subclass)
3104 break;
3105 }
3106 if (!f->name)
3107 return -EINVAL;
3108 if (!uac3_badd_func_has_valid_channels(mixer, f, c_chmask, p_chmask))
3109 return -EINVAL;
3110 st_chmask = f->st_chmask;
3111
3112 /* Playback */
3113 if (p_chmask) {
3114 /* Master channel, always writable */
3115 build_feature_ctl_badd(mixer, 0, UAC_FU_MUTE,
3116 UAC3_BADD_FU_ID2, map->map);
3117 /* Mono/Stereo volume channels, always writable */
3118 build_feature_ctl_badd(mixer, p_chmask, UAC_FU_VOLUME,
3119 UAC3_BADD_FU_ID2, map->map);
3120 }
3121
3122 /* Capture */
3123 if (c_chmask) {
3124 /* Master channel, always writable */
3125 build_feature_ctl_badd(mixer, 0, UAC_FU_MUTE,
3126 UAC3_BADD_FU_ID5, map->map);
3127 /* Mono/Stereo volume channels, always writable */
3128 build_feature_ctl_badd(mixer, c_chmask, UAC_FU_VOLUME,
3129 UAC3_BADD_FU_ID5, map->map);
3130 }
3131
3132 /* Side tone-mixing */
3133 if (st_chmask) {
3134 /* Master channel, always writable */
3135 build_feature_ctl_badd(mixer, 0, UAC_FU_MUTE,
3136 UAC3_BADD_FU_ID7, map->map);
3137 /* Mono volume channel, always writable */
3138 build_feature_ctl_badd(mixer, 1, UAC_FU_VOLUME,
3139 UAC3_BADD_FU_ID7, map->map);
3140 }
3141
3528cd8f
JS		 3142 /* Insertion Control */
3143 if (f->subclass == UAC3_FUNCTION_SUBCLASS_HEADSET_ADAPTER) {
3144 struct usb_audio_term iterm, oterm;
3145
3146 /* Input Term - Insertion control */
3147 memset(&iterm, 0, sizeof(iterm));
3148 iterm.id = UAC3_BADD_IT_ID4;
3149 iterm.type = UAC_BIDIR_TERMINAL_HEADSET;
934b9659 3150 build_connector_control(mixer, map->map, &iterm, true);
3528cd8f
JS		 3151
3152 /* Output Term - Insertion control */
3153 memset(&oterm, 0, sizeof(oterm));
3154 oterm.id = UAC3_BADD_OT_ID3;
3155 oterm.type = UAC_BIDIR_TERMINAL_HEADSET;
934b9659 3156 build_connector_control(mixer, map->map, &oterm, false);
3528cd8f
JS		 3157 }
3158
17156f23
RB		 3159 return 0;
3160}
3161
1da177e4
LT		 3162/*
3163 * create mixer controls
3164 *
de48c7bc 3165 * walk through all UAC_OUTPUT_TERMINAL descriptors to search for mixers
1da177e4 3166 */
84957a8a 3167static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
1da177e4 3168{
86e07d34 3169 struct mixer_build state;
1da177e4
LT		 3170 int err;
3171 const struct usbmix_ctl_map *map;
23caaf19 3172 void *p;
1da177e4
LT		 3173
3174 memset(&state, 0, sizeof(state));
84957a8a
CL		 3175 state.chip = mixer->chip;
3176 state.mixer = mixer;
1faa5d07
DM		 3177 state.buffer = mixer->hostif->extra;
3178 state.buflen = mixer->hostif->extralen;
1da177e4
LT		 3179
3180 /* check the mapping table */
27d10f56
CL		 3181 for (map = usbmix_ctl_maps; map->id; map++) {
3182 if (map->id == state.chip->usb_id) {
1da177e4 3183 state.map = map->map;
8e062ec7 3184 state.selector_map = map->selector_map;
fef66ae7 3185 mixer->connector_map = map->connector_map;
1da177e4
LT		 3186 break;
3187 }
3188 }
1da177e4 3189
23caaf19 3190 p = NULL;
6bc170e4
DM		 3191 while ((p = snd_usb_find_csint_desc(mixer->hostif->extra,
3192 mixer->hostif->extralen,
1faa5d07 3193 p, UAC_OUTPUT_TERMINAL)) != NULL) {
57f87706
TI		 3194 if (!snd_usb_validate_audio_desc(p, mixer->protocol))
3195 continue; /* skip invalid descriptor */
3196
23caaf19 3197 if (mixer->protocol == UAC_VERSION_1) {
69da9bcb 3198 struct uac1_output_terminal_descriptor *desc = p;
23caaf19 3199
6bc170e4
DM		 3200 /* mark terminal ID as visited */
3201 set_bit(desc->bTerminalID, state.unitbitmap);
23caaf19
DM		 3202 state.oterm.id = desc->bTerminalID;
3203 state.oterm.type = le16_to_cpu(desc->wTerminalType);
3204 state.oterm.name = desc->iTerminal;
3205 err = parse_audio_unit(&state, desc->bSourceID);
83ea5d18 3206 if (err < 0 && err != -EINVAL)
23caaf19 3207 return err;
9a2fe9b8 3208 } else if (mixer->protocol == UAC_VERSION_2) {
23caaf19
DM		 3209 struct uac2_output_terminal_descriptor *desc = p;
3210
6bc170e4
DM		 3211 /* mark terminal ID as visited */
3212 set_bit(desc->bTerminalID, state.unitbitmap);
23caaf19
DM		 3213 state.oterm.id = desc->bTerminalID;
3214 state.oterm.type = le16_to_cpu(desc->wTerminalType);
3215 state.oterm.name = desc->iTerminal;
3216 err = parse_audio_unit(&state, desc->bSourceID);
83ea5d18 3217 if (err < 0 && err != -EINVAL)
23caaf19 3218 return err;
09414207 3219
6bc170e4
DM		 3220 /*
3221 * For UAC2, use the same approach to also add the
3222 * clock selectors
3223 */
09414207 3224 err = parse_audio_unit(&state, desc->bCSourceID);
83ea5d18 3225 if (err < 0 && err != -EINVAL)
09414207 3226 return err;
5a222e84 3227
7dc3c5a0
TI		 3228 if ((state.oterm.type & 0xff00) != 0x0100 &&
3229 uac_v2v3_control_is_readable(le16_to_cpu(desc->bmControls),
5a222e84 3230 UAC2_TE_CONNECTOR)) {
934b9659
TI		 3231 build_connector_control(state.mixer, state.map,
3232 &state.oterm, false);
5a222e84 3233 }
9a2fe9b8
RB		 3234 } else { /* UAC_VERSION_3 */
3235 struct uac3_output_terminal_descriptor *desc = p;
3236
9a2fe9b8
RB		 3237 /* mark terminal ID as visited */
3238 set_bit(desc->bTerminalID, state.unitbitmap);
3239 state.oterm.id = desc->bTerminalID;
3240 state.oterm.type = le16_to_cpu(desc->wTerminalType);
3241 state.oterm.name = le16_to_cpu(desc->wTerminalDescrStr);
3242 err = parse_audio_unit(&state, desc->bSourceID);
3243 if (err < 0 && err != -EINVAL)
3244 return err;
3245
3246 /*
3247 * For UAC3, use the same approach to also add the
3248 * clock selectors
3249 */
3250 err = parse_audio_unit(&state, desc->bCSourceID);
3251 if (err < 0 && err != -EINVAL)
3252 return err;
1d38f5d8 3253
7dc3c5a0
TI		 3254 if ((state.oterm.type & 0xff00) != 0x0100 &&
3255 uac_v2v3_control_is_readable(le32_to_cpu(desc->bmControls),
1d38f5d8 3256 UAC3_TE_INSERTION)) {
934b9659
TI		 3257 build_connector_control(state.mixer, state.map,
3258 &state.oterm, false);
1d38f5d8 3259 }
23caaf19 3260 }
1da177e4 3261 }
23caaf19 3262
1da177e4
LT		 3263 return 0;
3264}
84957a8a 3265
fef66ae7
TI		 3266static int delegate_notify(struct usb_mixer_interface *mixer, int unitid,
3267 u8 *control, u8 *channel)
3268{
3269 const struct usbmix_connector_map *map = mixer->connector_map;
3270
3271 if (!map)
3272 return unitid;
3273
3274 for (; map->id; map++) {
3275 if (map->id == unitid) {
3276 if (control && map->control)
3277 *control = map->control;
3278 if (channel && map->channel)
3279 *channel = map->channel;
3280 return map->delegated_id;
3281 }
3282 }
3283 return unitid;
3284}
3285
7b1eda22 3286void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid)
6639b6c2 3287{
3360b84b 3288 struct usb_mixer_elem_list *list;
6639b6c2 3289
fef66ae7
TI		 3290 unitid = delegate_notify(mixer, unitid, NULL, NULL);
3291
8c558076 3292 for_each_mixer_elem(list, mixer, unitid) {
220345e9
TI		 3293 struct usb_mixer_elem_info *info;
3294
3295 if (!list->is_std_info)
3296 continue;
3297 info = mixer_elem_list_to_info(list);
b2500b58
JS		 3298 /* invalidate cache, so the value is read from the device */
3299 info->cached = 0;
6639b6c2 3300 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
3360b84b 3301 &list->kctl->id);
b2500b58 3302 }
6639b6c2
CL		 3303}
3304
ebfdeea3 3305static void snd_usb_mixer_dump_cval(struct snd_info_buffer *buffer,
3360b84b 3306 struct usb_mixer_elem_list *list)
ebfdeea3 3307{
8c558076 3308 struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list);
362372ce 3309 static const char * const val_types[] = {
64752a95
TI		 3310 [USB_MIXER_BOOLEAN] = "BOOLEAN",
3311 [USB_MIXER_INV_BOOLEAN] = "INV_BOOLEAN",
3312 [USB_MIXER_S8] = "S8",
3313 [USB_MIXER_U8] = "U8",
3314 [USB_MIXER_S16] = "S16",
3315 [USB_MIXER_U16] = "U16",
3316 [USB_MIXER_S32] = "S32",
3317 [USB_MIXER_U32] = "U32",
3318 [USB_MIXER_BESPOKEN] = "BESPOKEN",
362372ce 3319 };
ebfdeea3 3320 snd_iprintf(buffer, " Info: id=%i, control=%i, cmask=0x%x, "
3360b84b 3321 "channels=%i, type=\"%s\"\n", cval->head.id,
ebfdeea3
JK		 3322 cval->control, cval->cmask, cval->channels,
3323 val_types[cval->val_type]);
3324 snd_iprintf(buffer, " Volume: min=%i, max=%i, dBmin=%i, dBmax=%i\n",
3325 cval->min, cval->max, cval->dBmin, cval->dBmax);
3326}
3327
3328static void snd_usb_mixer_proc_read(struct snd_info_entry *entry,
3329 struct snd_info_buffer *buffer)
3330{
3331 struct snd_usb_audio *chip = entry->private_data;
3332 struct usb_mixer_interface *mixer;
3360b84b 3333 struct usb_mixer_elem_list *list;
ebfdeea3
JK		 3334 int unitid;
3335
3336 list_for_each_entry(mixer, &chip->mixer_list, list) {
3337 snd_iprintf(buffer,
7affdc17 3338 "USB Mixer: usb_id=0x%08x, ctrlif=%i, ctlerr=%i\n",
0aef31b7 3339 chip->usb_id, mixer_ctrl_intf(mixer),
7affdc17 3340 mixer->ignore_ctl_error);
ebfdeea3
JK		 3341 snd_iprintf(buffer, "Card: %s\n", chip->card->longname);
3342 for (unitid = 0; unitid < MAX_ID_ELEMS; unitid++) {
8c558076 3343 for_each_mixer_elem(list, mixer, unitid) {
3360b84b
TI		 3344 snd_iprintf(buffer, " Unit: %i\n", list->id);
3345 if (list->kctl)
3346 snd_iprintf(buffer,
3347 " Control: name=\"%s\", index=%i\n",
3348 list->kctl->id.name,
3349 list->kctl->id.index);
3350 if (list->dump)
3351 list->dump(buffer, list);
3352 }
ebfdeea3
JK		 3353 }
3354 }
3355}
3356
e213e9cf
DM		 3357static void snd_usb_mixer_interrupt_v2(struct usb_mixer_interface *mixer,
3358 int attribute, int value, int index)
3359{
3360b84b 3360 struct usb_mixer_elem_list *list;
e213e9cf
DM		 3361 __u8 unitid = (index >> 8) & 0xff;
3362 __u8 control = (value >> 8) & 0xff;
3363 __u8 channel = value & 0xff;
191227d9 3364 unsigned int count = 0;
e213e9cf
DM		 3365
3366 if (channel >= MAX_CHANNELS) {
0ba41d91
TI		 3367 usb_audio_dbg(mixer->chip,
3368 "%s(): bogus channel number %d\n",
3369 __func__, channel);
e213e9cf
DM		 3370 return;
3371 }
3372
fef66ae7
TI		 3373 unitid = delegate_notify(mixer, unitid, &control, &channel);
3374
8c558076 3375 for_each_mixer_elem(list, mixer, unitid)
191227d9
DM		 3376 count++;
3377
3378 if (count == 0)
3379 return;
3380
8c558076 3381 for_each_mixer_elem(list, mixer, unitid) {
3360b84b
TI		 3382 struct usb_mixer_elem_info *info;
3383
3384 if (!list->kctl)
3385 continue;
220345e9
TI		 3386 if (!list->is_std_info)
3387 continue;
3360b84b 3388
8c558076 3389 info = mixer_elem_list_to_info(list);
191227d9 3390 if (count > 1 && info->control != control)
e213e9cf
DM		 3391 continue;
3392
3393 switch (attribute) {
3394 case UAC2_CS_CUR:
3395 /* invalidate cache, so the value is read from the device */
3396 if (channel)
3397 info->cached &= ~(1 << channel);
3398 else /* master channel */
3399 info->cached = 0;
3400
3401 snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
3360b84b 3402 &info->head.kctl->id);
e213e9cf
DM		 3403 break;
3404
3405 case UAC2_CS_RANGE:
3406 /* TODO */
3407 break;
3408
3409 case UAC2_CS_MEM:
3410 /* TODO */
3411 break;
3412
3413 default:
0ba41d91
TI		 3414 usb_audio_dbg(mixer->chip,
3415 "unknown attribute %d in interrupt\n",
3416 attribute);
e213e9cf
DM		 3417 break;
3418 } /* switch */
3419 }
3420}
3421
3422static void snd_usb_mixer_interrupt(struct urb *urb)
6639b6c2
CL		 3423{
3424 struct usb_mixer_interface *mixer = urb->context;
e213e9cf 3425 int len = urb->actual_length;
edf7de31 3426 int ustatus = urb->status;
e213e9cf 3427
edf7de31 3428 if (ustatus != 0)
e213e9cf 3429 goto requeue;
6639b6c2 3430
e213e9cf
DM		 3431 if (mixer->protocol == UAC_VERSION_1) {
3432 struct uac1_status_word *status;
6639b6c2 3433
e213e9cf
DM		 3434 for (status = urb->transfer_buffer;
3435 len >= sizeof(*status);
3436 len -= sizeof(*status), status++) {
0ba41d91 3437 dev_dbg(&urb->dev->dev, "status interrupt: %02x %02x\n",
e213e9cf
DM		 3438 status->bStatusType,
3439 status->bOriginator);
3440
6639b6c2 3441 /* ignore any notifications not from the control interface */
e213e9cf
DM		 3442 if ((status->bStatusType & UAC1_STATUS_TYPE_ORIG_MASK) !=
3443 UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF)
6639b6c2 3444 continue;
e213e9cf
DM		 3445
3446 if (status->bStatusType & UAC1_STATUS_TYPE_MEM_CHANGED)
3447 snd_usb_mixer_rc_memory_change(mixer, status->bOriginator);
b259b10c 3448 else
e213e9cf
DM		 3449 snd_usb_mixer_notify_id(mixer, status->bOriginator);
3450 }
3451 } else { /* UAC_VERSION_2 */
3452 struct uac2_interrupt_data_msg *msg;
3453
3454 for (msg = urb->transfer_buffer;
3455 len >= sizeof(*msg);
3456 len -= sizeof(*msg), msg++) {
3457 /* drop vendor specific and endpoint requests */
3458 if ((msg->bInfo & UAC2_INTERRUPT_DATA_MSG_VENDOR) ||
3459 (msg->bInfo & UAC2_INTERRUPT_DATA_MSG_EP))
3460 continue;
3461
3462 snd_usb_mixer_interrupt_v2(mixer, msg->bAttribute,
3463 le16_to_cpu(msg->wValue),
3464 le16_to_cpu(msg->wIndex));
6639b6c2
CL		 3465 }
3466 }
e213e9cf
DM		 3467
3468requeue:
6bc170e4
DM		 3469 if (ustatus != -ENOENT &&
3470 ustatus != -ECONNRESET &&
3471 ustatus != -ESHUTDOWN) {
6639b6c2
CL		 3472 urb->dev = mixer->chip->dev;
3473 usb_submit_urb(urb, GFP_ATOMIC);
3474 }
3475}
3476
3477/* create the handler for the optional status interrupt endpoint */
3478static int snd_usb_mixer_status_create(struct usb_mixer_interface *mixer)
3479{
6639b6c2
CL		 3480 struct usb_endpoint_descriptor *ep;
3481 void *transfer_buffer;
3482 int buffer_length;
3483 unsigned int epnum;
3484
6639b6c2 3485 /* we need one interrupt input endpoint */
1faa5d07 3486 if (get_iface_desc(mixer->hostif)->bNumEndpoints < 1)
6639b6c2 3487 return 0;
1faa5d07 3488 ep = get_endpoint(mixer->hostif, 0);
913ae5a2 3489 if (!usb_endpoint_dir_in(ep) || !usb_endpoint_xfer_int(ep))
6639b6c2
CL		 3490 return 0;
3491
42a6e66f 3492 epnum = usb_endpoint_num(ep);
6639b6c2
CL		 3493 buffer_length = le16_to_cpu(ep->wMaxPacketSize);
3494 transfer_buffer = kmalloc(buffer_length, GFP_KERNEL);
3495 if (!transfer_buffer)
3496 return -ENOMEM;
3497 mixer->urb = usb_alloc_urb(0, GFP_KERNEL);
3498 if (!mixer->urb) {
3499 kfree(transfer_buffer);
3500 return -ENOMEM;
3501 }
3502 usb_fill_int_urb(mixer->urb, mixer->chip->dev,
3503 usb_rcvintpipe(mixer->chip->dev, epnum),
3504 transfer_buffer, buffer_length,
e213e9cf 3505 snd_usb_mixer_interrupt, mixer, ep->bInterval);
6639b6c2
CL		 3506 usb_submit_urb(mixer->urb, GFP_KERNEL);
3507 return 0;
3508}
3509
3c69dc91 3510int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif)
84957a8a 3511{
c0a142e2 3512 static const struct snd_device_ops dev_ops = {
84957a8a
CL		 3513 .dev_free = snd_usb_mixer_dev_free
3514 };
3515 struct usb_mixer_interface *mixer;
23caaf19 3516 int err;
84957a8a
CL		 3517
3518 strcpy(chip->card->mixername, "USB Mixer");
3519
561b220a 3520 mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
84957a8a
CL		 3521 if (!mixer)
3522 return -ENOMEM;
3523 mixer->chip = chip;
3c69dc91 3524 mixer->ignore_ctl_error = !!(chip->quirk_flags & QUIRK_FLAG_IGNORE_CTL_ERROR);
291186e0
JK		 3525 mixer->id_elems = kcalloc(MAX_ID_ELEMS, sizeof(*mixer->id_elems),
3526 GFP_KERNEL);
6639b6c2
CL		 3527 if (!mixer->id_elems) {
3528 kfree(mixer);
3529 return -ENOMEM;
3530 }
84957a8a 3531
1faa5d07
DM		 3532 mixer->hostif = &usb_ifnum_to_if(chip->dev, ctrlif)->altsetting[0];
3533 switch (get_iface_desc(mixer->hostif)->bInterfaceProtocol) {
a2acad82
CL		 3534 case UAC_VERSION_1:
3535 default:
3536 mixer->protocol = UAC_VERSION_1;
3537 break;
3538 case UAC_VERSION_2:
3539 mixer->protocol = UAC_VERSION_2;
3540 break;
9a2fe9b8
RB		 3541 case UAC_VERSION_3:
3542 mixer->protocol = UAC_VERSION_3;
3543 break;
a2acad82 3544 }
7b8a043f 3545
17156f23
RB		 3546 if (mixer->protocol == UAC_VERSION_3 &&
3547 chip->badd_profile >= UAC3_FUNCTION_SUBCLASS_GENERIC_IO) {
f25ecf8f
TI		 3548 err = snd_usb_mixer_controls_badd(mixer, ctrlif);
3549 if (err < 0)
3550 goto _error;
3551 } else {
3552 err = snd_usb_mixer_controls(mixer);
3553 if (err < 0)
3554 goto _error;
17156f23 3555 }
ad6baae6
JS		 3556
3557 err = snd_usb_mixer_status_create(mixer);
3558 if (err < 0)
3559 goto _error;
3560
328e9f69
TI		 3561 err = snd_usb_mixer_apply_create_quirk(mixer);
3562 if (err < 0)
3563 goto _error;
468b8fde 3564
9cbb2808 3565 err = snd_device_new(chip->card, SNDRV_DEV_CODEC, mixer, &dev_ops);
93446edc
CL		 3566 if (err < 0)
3567 goto _error;
ebfdeea3 3568
7449054a
TI		 3569 if (list_empty(&chip->mixer_list))
3570 snd_card_ro_proc_new(chip->card, "usbmixer", chip,
3571 snd_usb_mixer_proc_read);
ebfdeea3 3572
84957a8a
CL		 3573 list_add(&mixer->list, &chip->mixer_list);
3574 return 0;
93446edc
CL		 3575
3576_error:
3577 snd_usb_mixer_free(mixer);
3578 return err;
84957a8a
CL		 3579}
3580
a6cece9d 3581void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer)
84957a8a 3582{
124751d5
TI		 3583 if (mixer->disconnected)
3584 return;
3585 if (mixer->urb)
3586 usb_kill_urb(mixer->urb);
3587 if (mixer->rc_urb)
3588 usb_kill_urb(mixer->rc_urb);
9e4d5c1b
GB		 3589 if (mixer->private_free)
3590 mixer->private_free(mixer);
124751d5 3591 mixer->disconnected = true;
84957a8a 3592}
400362f1
TI		 3593
3594#ifdef CONFIG_PM
3595/* stop any bus activity of a mixer */
3596static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer)
3597{
3598 usb_kill_urb(mixer->urb);
3599 usb_kill_urb(mixer->rc_urb);
3600}
3601
3602static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer)
3603{
3604 int err;
3605
3606 if (mixer->urb) {
3607 err = usb_submit_urb(mixer->urb, GFP_NOIO);
3608 if (err < 0)
3609 return err;
3610 }
3611
3612 return 0;
3613}
3614
3615int snd_usb_mixer_suspend(struct usb_mixer_interface *mixer)
3616{
3617 snd_usb_mixer_inactivate(mixer);
9e4d5c1b
GB		 3618 if (mixer->private_suspend)
3619 mixer->private_suspend(mixer);
400362f1
TI		 3620 return 0;
3621}
3622
3360b84b 3623static int restore_mixer_value(struct usb_mixer_elem_list *list)
400362f1 3624{
8c558076 3625 struct usb_mixer_elem_info *cval = mixer_elem_list_to_info(list);
400362f1
TI		 3626 int c, err, idx;
3627
785b6f29
TI		 3628 if (cval->val_type == USB_MIXER_BESPOKEN)
3629 return 0;
3630
400362f1
TI		 3631 if (cval->cmask) {
3632 idx = 0;
3633 for (c = 0; c < MAX_CHANNELS; c++) {
3634 if (!(cval->cmask & (1 << c)))
3635 continue;
6aa6925c 3636 if (cval->cached & (1 << (c + 1))) {
eef90451 3637 err = snd_usb_set_cur_mix_value(cval, c + 1, idx,
400362f1
TI		 3638 cval->cache_val[idx]);
3639 if (err < 0)
3640 return err;
3641 }
3642 idx++;
3643 }
3644 } else {
3645 /* master */
3646 if (cval->cached) {
eef90451 3647 err = snd_usb_set_cur_mix_value(cval, 0, 0, *cval->cache_val);
400362f1
TI		 3648 if (err < 0)
3649 return err;
3650 }
3651 }
3652
3653 return 0;
3654}
3655
7b9cf903 3656int snd_usb_mixer_resume(struct usb_mixer_interface *mixer)
400362f1 3657{
3360b84b 3658 struct usb_mixer_elem_list *list;
400362f1
TI		 3659 int id, err;
3660
44609fc0
KHF		 3661 /* restore cached mixer values */
3662 for (id = 0; id < MAX_ID_ELEMS; id++) {
3663 for_each_mixer_elem(list, mixer, id) {
7b9cf903
TI		 3664 if (list->resume) {
3665 err = list->resume(list);
44609fc0
KHF		 3666 if (err < 0)
3667 return err;
400362f1
TI		 3668 }
3669 }
3670 }
3671
964af639
TI		 3672 snd_usb_mixer_resume_quirk(mixer);
3673
400362f1
TI		 3674 return snd_usb_mixer_activate(mixer);
3675}
3676#endif
3360b84b
TI		 3677
3678void snd_usb_mixer_elem_init_std(struct usb_mixer_elem_list *list,
3679 struct usb_mixer_interface *mixer,
3680 int unitid)
3681{
3682 list->mixer = mixer;
3683 list->id = unitid;
3684 list->dump = snd_usb_mixer_dump_cval;
3685#ifdef CONFIG_PM
7b9cf903 3686 list->resume = restore_mixer_value;
3360b84b
TI		 3687#endif
3688}
Linux 6.x block layer and io_uring tree(s)